Changes

| divisor = 1, 2, 4

| divisor = 1, 2, 4

| roman unicode = Ⅳ, ⅳ

| roman unicode = Ⅳ, ⅳ

| greek prefix = [[wikt:tetra-|tetra-]]

| greek prefix = [[tetra-|tetra-]]

| latin prefix = [[wikt:quadri-|quadri-]]/[[wikt:quadr-|quadr-]]

| latin prefix = [[quadri-|quadri-]]/[[quadr-|quadr-]]

| lang1 = [[Greek numerals|Greek]]  

| lang1 = [[Greek numerals|Greek]]  

| lang1 symbol =  δ (or Δ)

| lang1 symbol =  δ (or Δ)

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'''.

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 ==

== Mathematics ==

In [[mathematics]], the number four is an [[even number]] and the smallest [[composite number]]. Four is also the second [[square number]] after [[one]].

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 fingers and four toes, on each hand and foot, respectively.  This proves difficult to count on your fingers. Four squared is 16, and four doubled is 8.

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, and four doubled is 8.

 

 

 

{{Math-stub}}

{{Math-stub}}

[[Category:Square numbers]]

[[Category:Square numbers]]

[[Category:Integers]]

[[Category:Integers]]