# 4

4

3

7

4 = 2 × 2

Factor Count
2 2

16

64

2

## Cube root of 4

1.58740105196819936139718265621923...

10

## Reciprocal of 4

0.2500000000000000

100

3

## Octal of 4

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)

9

2

2

0

## Properties of 4

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.

## sin 4

-0.75680249530792820245039820292732...

## cos 4

-0.65364362086361194048578227011603...

## tan 4

1.15782128234957748524891485430999...

## sin 4°

0.06975647374412530243859009715379...

## cos 4°

0.99756405025982419765284703316865...

## tan 4°

0.06992681194351041407131219784787...

## log 4

1.38629436111989057245352796599036...

## log10 4

0.60205999132796239603493404501933...

## log2 4

2.00000000000000000000000000000000...