What is 4 (number)?
{{dablink|This page is about the number 4. For the year, see [[4]]}} {{Infobox number | number = 4 | numeral = [[Quaternary numeral system|quaternary]] | divisor = 1, 2, 4 | roman unicode = Ⅳ, ⅳ | greek prefix = [[wikt:tetra-|tetra-]] | latin prefix = [[wikt:quadri-|quadri-]]/[[wikt:quadr-|quadr-]] | lang1 = [[Greek numerals|Greek]] | lang1 symbol = δ (or Δ) | lang2 = [[Arabic language|Arabic]] | lang2 symbol = {{resize|150%|٤,4}} | lang3 = [[Persian language|Persian]] | lang3 symbol = {{resize|150%|۴}} | lang4 = [[Urdu]] | lang4 symbol= {{Urdu|4|11|top}} | lang5 = [[Ge'ez alphabet|Ge'ez]] | lang5 symbol = ፬ | lang6 = [[Bengali language|Bengali]] | lang6 symbol = {{resize|150%|৪}} | lang7 = [[Chinese numeral]] | lang7 symbol = 四，亖，肆 | lang8 = [[Korean numerals|Korean]] | lang8 symbol = 넷,사 | lang9 = [[Devanāgarī|Devanagari]] | lang9 symbol = {{resize|150%|४}} | lang10 = [[Telugu language|Telugu]] | lang10 symbol = {{resize|150%|౪}} | lang11 = [[Malayalam Language|Malayalam]] | lang11 symbol = {{resize|150%|൪}} | lang12 = [[Tamil language|Tamil]] | lang12 symbol = {{resize|150%|௪}} | lang13 = [[Hebrew (language)|Hebrew]] | lang13 symbol = ארבע (Arba, pronounced AR-bah) or {{resize|150%|ד}} ([[Dalet]], 4th letter of the Hebrew alphabet) | lang14 = [[Khmer numerals|Khmer]] | lang14 symbol = ៤ | lang15 = [[Thai numerals|Thai]] | lang15 symbol = ๔ | lang16 = [[Kannada language|Kannada]] | lang16 symbol = ४ }} [[File:En-us-Four.ogg|thumb|right|Pronunciation of the number 4]] The [[number]] '''four''' is a [[number]] and a [[numeral]]. It comes after the number [[3 (number)|three]], and before the number [[5 (number)|five]]. In [[Roman numerals]], it is '''IV'''. == Mathematics == In [[mathematics]], the number four is an [[even number]] and the smallest [[composite number]]. Four is also the second [[square number]] after [[one]]. A small minority of people have four [[finger]]s on each [[hand]] and four [[toes]] on each [[foot]].{{Citation needed|date=December 2022}} Four squared is 16,