U+0664 "٤" Arabic-Indic Digit Four Unicode Character

U+0664 "٤" Arabic-Indic Digit Four is a numeral used in the Arabic script to represent the number four, distinct from the Western "4" in both shape and origin. It belongs to the block of Arabic-Indic digits, which are employed in various languages that use the Arabic script, including Arabic, Persian, and Urdu, although its exact appearance and usage can vary by region. This digit is encoded in Unicode to ensure consistent representation across digital platforms, preserving the traditional numeral system that developed from Indian mathematics and spread through the Islamic world.

General Properties

Code Point	U+0664
Version Added	1.1
Name	Arabic-Indic Digit Four
Block	Arabic
General Category	Decimal Number
Canonical Combining Class	Not Reordered
Bidirectional Class	Arabic Number

Encodings

HTML Decimal Encoding	٤
HTML Hex Encoding	٤
UTF-8 Encoding	0xD9 0xA4
UTF-16 Encoding	0x0664
UTF-32 Encoding	0x00000664
C/C++/Java Escape	\u0664

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Quick Check	Yes
NFKD Quick Check	Yes
Numeric Type	Decimal
Numeric Value	4
Line Break	Numeric
Script	Arabic
Script Extensions	Arabic Thaana Yezidi
Indic Syllabic Category	Other
ID Continue	Yes
XID Continue	Yes
Vertical Orientation	Rotated
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Numeric
Sentence Break	Numeric