Properties of the Number 3956

Three Thousand Nine Hundred Fifty-Six

Basics

Value: 3955 → 3956 → 3957

Parity: even

Prime: No

Previous Prime: 3947

Next Prime: 3967

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 23 × 43

Divisors: 1, 2, 4, 23, 43, 46, 86, 92, 172, 989

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111101110100

Octal: 7564

Duodecimal: 2358

Hexadecimal: f74

Square: 15649936

Square Root: 62.89674077406555

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

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

a(n) = number of partitions of n into parts of 2 kinds. A712

Number of partitions p of n such that median(p) = mean(p). A240219

Numbers k such that k and k+1 have the same sum of unitary divisors (A034448). A64125

Numbers k such that bsigma(k) = bsigma(k+1), where bsigma(k) is the sum of the bi-unitary divisors of k (A188999). A293183

Numbers k such that isigma(k) = isigma(k+1), where isigma(k) is the sum of the infinitary divisors of k (A049417). A306985

Numbers k such that the geometric mean of φ(k) and σ(k) is an integer. A11257

Powers of cube root of 12 rounded to nearest integer. A18010

Powers of cube root of 12 rounded down. A18009

Numbers m such that there are precisely 9 groups of order m. A249552

Numbers k such that 2^k + 21 is prime. A57201