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4

This article is about the number. For the years, see BC 4 and 4 AD. For other uses, see 4 (disambiguation), IV (disambiguation) and Number 4.

← 3 4 5 →
−1 0 1 2 3 4 5 6 7 8 9 →
Cardinalfour
Ordinal4th
(fourth)
Numeral systemquaternary
Factorization22
Divisors1, 2, 4
Greek numeralΔ´
Roman numeral
Greek prefixtetra-
Latin prefixquadri-/quadr-
Binary1002
Ternary113
Senary46
Octal48
Duodecimal412
Hexadecimal416
ArmenianԴ
Arabic, Kurdish٤
Persian, Sindhi۴
Shahmukhi, Urdu۴
Ge'ez፬
Bengali, Assamese৪
Chinese numeral四，亖，肆
Devanagari४
Telugu౪
Malayalam൪
Tamil௪
Hebrewד
Khmer៤
Thai๔
Kannada೪
Burmese၄
Babylonian numeral𒐘
Egyptian hieroglyph, Chinese counting rod||||
Maya numerals••••
Morse code.... _

4 (four) is a number, numeral and digit. It is the natural number following 3 and preceding 5. It is a square number, the smallest semiprime and composite number, and is considered unlucky in many East Asian cultures.


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4 (ахыԥхьаӡара) AB 4 (getal) AF አራት AM Fēower ANG 4 (عدد) Arabic 4 (ܡܢܝܢܐ) ARC 4 ARY ৪ AS Cuatro AST Ункъо AV

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