Source: Noto Sans

U+2074 Superscript Four

U+2074 was added in Unicode version 1.1 in 1993. It belongs to the block U+2070 to U+209F Superscripts and Subscripts in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Other Number and is commonly used, that is, in no specific script. The codepoint represents the digit 4.

The glyph is a superscript version of the glyph Digit Four. Its width in East Asian texts is determined by its context. It can be displayed wide or narrow. In bidirectional text it is written as European number from left to right. When changing direction it is not mirrored. If its East Asian Width is “narrow”, U+2074 forms a word with similar characters, which prevents a line break inside it. Otherwise it allows line breaks around it, except in some numeric contexts.

The Wikipedia has the following information about this codepoint:

In arithmetic and algebra, the fourth power of a number n is the result of multiplying four instances of n together. So:

n⁴ = n × n × n × n

Fourth powers are also formed by multiplying a number by its cube. Furthermore, they are squares of squares.
Some people refer to n⁴ as n “tesseracted”, “hypercubed”, “zenzizenzic”, “biquadrate” or “supercubed” instead of “to the power of 4”.
The sequence of fourth powers of integers (also known as biquadrates or tesseractic numbers) is:

0, 1, 16, 81, 256, 625, 1296, 2401, 4096, 6561, 10000, 14641, 20736, 28561, 38416, 50625, 65536, 83521, 104976, 130321, 160000, 194481, 234256, 279841, 331776, 390625, 456976, 531441, 614656, 707281, 810000, ... (sequence A000583 in the OEIS).

Representations

System	Representation
Nº	8308
UTF-8	E2 81 B4
UTF-16	20 74
UTF-32	00 00 20 74
URL-Quoted	%E2%81%B4
HTML hex reference	⁴
Wrong windows-1252 Mojibake	â´
Encoding: CP949 (hex bytes)	A9 F9
Encoding: EUC_KR (hex bytes)	A9 F9
Encoding: GB18030 (hex bytes)	81 36 AD 36
Encoding: ISO2022_JP_2 (hex bytes)	1B 24 28 43 29 79 1B 28 42
Encoding: ISO2022_KR (hex bytes)	1B 24 29 43 0E 29 79 0F
Encoding: JOHAB (hex bytes)	DD 9B
AGL: Latin-4	four.superior
AGL: Latin-5	four.superior
Adobe Glyph List	foursuperior
digraph	4S

Elsewhere

Complete Record

Property	Value
Age (age)	1.1 (1993)
Unicode Name (na)	SUPERSCRIPT FOUR
Unicode 1 Name (na1)	SUPERSCRIPT DIGIT FOUR
Block (blk)	Supplementary Private Use Area-B
General Category (gc)	Other Number
Script (sc)	Common
Bidirectional Category (bc)	European Number
Combining Class (ccc)	Not Reordered
Decomposition Type (dt)	superscript
Decomposition Mapping (dm)	Digit Four
Lowercase (Lower)	✘
Simple Lowercase Mapping (slc)	Superscript Four
Lowercase Mapping (lc)	Superscript Four
Uppercase (Upper)	✘
Simple Uppercase Mapping (suc)	Superscript Four
Uppercase Mapping (uc)	Superscript Four
Simple Titlecase Mapping (stc)	Superscript Four
Titlecase Mapping (tc)	Superscript Four
Case Folding (cf)	Superscript Four
ASCII Hex Digit (AHex)	✘
Alphabetic (Alpha)	✘
Bidi Control (Bidi_C)	✘
Bidi Mirrored (Bidi_M)	✘
Composition Exclusion (CE)	✘
Case Ignorable (CI)	✘
Changes When Casefolded (CWCF)	✘
Changes When Casemapped (CWCM)	✘
Changes When NFKC Casefolded (CWKCF)	✔
Changes When Lowercased (CWL)	✘
Changes When Titlecased (CWT)	✘
Changes When Uppercased (CWU)	✘
Cased (Cased)	✘
Full Composition Exclusion (Comp_Ex)	✘
Default Ignorable Code Point (DI)	✘
Dash (Dash)	✘
Deprecated (Dep)	✘
Diacritic (Dia)	✘
Emoji Modifier Base (EBase)	✘
Emoji Component (EComp)	✘
Emoji Modifier (EMod)	✘
Emoji Presentation (EPres)	✘
Emoji (Emoji)	✘
Extender (Ext)	✘
Extended Pictographic (ExtPict)	✘
FC NFKC Closure (FC_NFKC)	Superscript Four
Grapheme Cluster Break (GCB)	Any
Grapheme Base (Gr_Base)	✔
Grapheme Extend (Gr_Ext)	✘
Grapheme Link (Gr_Link)	✘
Hex Digit (Hex)	✘
Hyphen (Hyphen)	✘
ID Continue (IDC)	✘
ID Start (IDS)	✘
IDS Binary Operator (IDSB)	✘
IDS Trinary Operator and (IDST)	✘
IDSU (IDSU)	0
ID_Compat_Math_Continue (ID_Compat_Math_Continue)	1
ID_Compat_Math_Start (ID_Compat_Math_Start)	0
Ideographic (Ideo)	✘
InCB (InCB)	None
Indic Mantra Category (InMC)	—
Indic Positional Category (InPC)	NA
Indic Syllabic Category (InSC)	Syllable_Modifier
Jamo Short Name (JSN)	—
Join Control (Join_C)	✘
Logical Order Exception (LOE)	✘
Modifier Combining Mark (MCM)	✘
Math (Math)	✘
Noncharacter Code Point (NChar)	✘
NFC Quick Check (NFC_QC)	Yes
NFD Quick Check (NFD_QC)	Yes
NFKC Casefold (NFKC_CF)	Digit Four
NFKC Quick Check (NFKC_QC)	No
NFKC_SCF (NFKC_SCF)	Digit Four
NFKD Quick Check (NFKD_QC)	No
Other Alphabetic (OAlpha)	✘
Other Default Ignorable Code Point (ODI)	✘
Other Grapheme Extend (OGr_Ext)	✘
Other ID Continue (OIDC)	✘
Other ID Start (OIDS)	✘
Other Lowercase (OLower)	✘
Other Math (OMath)	✘
Other Uppercase (OUpper)	✘
Prepended Concatenation Mark (PCM)	✘
Pattern Syntax (Pat_Syn)	✘
Pattern White Space (Pat_WS)	✘
Quotation Mark (QMark)	✘
Regional Indicator (RI)	✘
Radical (Radical)	✘
Sentence Break (SB)	Other
Soft Dotted (SD)	✘
Sentence Terminal (STerm)	✘
Terminal Punctuation (Term)	✘
Unified Ideograph (UIdeo)	✘
Variation Selector (VS)	✘
Word Break (WB)	Other
White Space (WSpace)	✘
XID Continue (XIDC)	✘
XID Start (XIDS)	✘
Expands On NFC (XO_NFC)	✘
Expands On NFD (XO_NFD)	✘
Expands On NFKC (XO_NFKC)	✘
Expands On NFKD (XO_NFKD)	✘
Bidi Paired Bracket (bpb)	Superscript Four
Bidi Paired Bracket Type (bpt)	None
East Asian Width (ea)	ambiguous
Hangul Syllable Type (hst)	Not Applicable
ISO 10646 Comment (isc)	—
Joining Group (jg)	No_Joining_Group
Joining Type (jt)	Non Joining
Line Break (lb)	Ambiguous (Alphabetic or Ideographic)
Numeric Type (nt)	digit
Numeric Value (nv)	4
Simple Case Folding (scf)	Superscript Four
Script Extension (scx)
Vertical Orientation (vo)	R