Properties of the Number 4

Four

Basics

Value: 3 → 4 → 5

Parity: even

Prime: No

Previous Prime: 3

Next Prime: 5

Digit Sum: 4

Digital Root: 4

Palindrome: Yes

Factorization: 2 ²

Divisors: 1, 2, 4

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: Yes

Today's Target

8509 Try Today's Challenge

Representations

Binary: 100

Octal: 4

Duodecimal: 4

Hexadecimal: 4

Square: 16

Square Root: 2

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: Yes

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: Yes

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

No sequences found.