Check the properties of a positive integer to enter the number in the search box. If you input two numbers separated by a space, the properties of the pair like GCD are shown. If you separate two numbers by a comma, the sequences containing those numbers are listed.
4 = 2 × 2
| Factor | Count |
|---|---|
| 2 | 2 |
2
1.58740105196819936139718265621923...
0.2500000000000000
100
3
4
4
| Prime number | No |
| Hexagonal number | No |
| Perfect number | No |
| Deficient number | Yes |
| Abundant number | No |
| Mersenne number | No |
| Harshad number | Yes |
| Harmonic divisor number | No |
QR4 (sequence)
0
Properties of the number 4: 4 has 3 divisors. The divisors of 4 are 1, 2, 4 and the sum of them is 7. The factorization of 4 is 2 × 2. The square and cube of 4 are 16 and 64 respectively. The square root and cube root of 4 are 2 and 1.58740105196819936139718265621923.... The binary, octal, hexadecimal of 4 are 100, 4, 4. 4 is not a prime number, not hexagonal number, not perfect number, deficient number, not Mersenne number, not Mersenne number, Harshad number, not harmonic divisor number.
-0.75680249530792820245039820292732...
-0.65364362086361194048578227011603...
1.15782128234957748524891485430999...
0.06975647374412530243859009715379...
0.99756405025982419765284703316865...
0.06992681194351041407131219784787...
1.38629436111989057245352796599036...
0.60205999132796239603493404501933...
2.00000000000000000000000000000000...