4
0 sources
4
Summary
4 is a Q16317911[1]. 4 ranks in the top 0.28% of positive_integer entities by monthly Wikipedia readership (46,125 views/month, #2 of 724).[2]
Key Facts
- 4's instance of is recorded as Q16317911[3].
- 4's instance of is recorded as composite number[4].
- 4's instance of is recorded as deficient number[5].
- 4's instance of is recorded as square number[6].
- 4's instance of is recorded as even number[7].
- 4's instance of is recorded as centered triangular number[8].
- 4's instance of is recorded as tetrahedral number[9].
- 4's instance of is recorded as power of two[10].
- 4's instance of is recorded as strictly non-palindromic number[11].
- 4's instance of is recorded as harshad number[12].
- 4's instance of is recorded as semiprime[13].
- 4's instance of is recorded as trimorphic number[14].
- 4's instance of is recorded as Motzkin number[15].
- 4 followed 3[16].
- 4 was followed by 5[17].
- 4's Commons category is recorded as 4 (number)[18].
- 4 is the opposite of −4[19].
- 4 is the opposite of ¼[20].
- 4's Unicode character is recorded as 4[21].
- 4's Unicode character is recorded as ٤[22].
- 4's Unicode character is recorded as ۴[23].
- 4's Unicode character is recorded as Ⅳ[24].
- 4's Unicode character is recorded as ⅳ[25].
- 4's Unicode character is recorded as ④[26].
- 4's Unicode character is recorded as ⑷[27].
Body
Definition and Type
Recorded instance of include Q16317911[3], composite number[4], deficient number[5], square number[6], even number[7], and centered triangular number[8]. Recorded opposite of include −4[19] and ¼[20].
Influence
Things named for 4 include Blue Ivy Carter[28], a singer[29], b. 2012[30], of United States[31]; Quaternary[32], a system[33]; Thursday[34], a day of the week[35]; Wednesday[36], a day of the week[37]; Four Knights Game[38], a chess opening[39]; FOUR[40], a building complex[41], in Germany[42], founded in 2024[43]; and Tylonycteris bat coronavirus HKU4[44], a taxon[45].
Why It Matters
4 ranks in the top 0.28% of positive_integer entities by monthly Wikipedia readership (46,125 views/month, #2 of 724).[2] 4 has Wikipedia articles in 29 language editions, a strong signal of global cultural recognition.[46] 4 is known by 55 alternative names across languages and contexts.[47]
Entities named for 4 include Blue Ivy Carter[28], a singer[29], b. 2012[30], of United States[31]; Quaternary[32], a system[33]; Thursday[34], a day of the week[35]; Wednesday[36], a day of the week[37]; Four Knights Game[38], a chess opening[39]; and FOUR[40], a building complex[41], in Germany[42], founded in 2024[43].