Properties of the Number 39961

Thirty-Nine Thousand Nine Hundred Sixty-One

Basics

Value: 39960 → 39961 → 39962

Parity: odd

Prime: No

Previous Prime: 39953

Next Prime: 39971

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 89 × 449

Divisors: 1, 89, 449, 39961

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001110000011001

Octal: 116031

Duodecimal: 1B161

Hexadecimal: 9c19

Square: 1596881521

Square Root: 199.90247622278218

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

Consider all ways of writing a number as p+2m² where p is 1 or a prime and m >= 0; sequence gives numbers that are expressible in at least 2 more ways than any smaller number. A16067

a(n) = 5·a(n-1) - 10·a(n-2) + 8·a(n-3) with a(0) = 2, a(1) = a(2) = 3. A247565

Composite numbers not divisible by 2 which in base 4 contain their largest proper factor as a substring. A63145

Numerator of the limiting density of residues attained by the Fibonacci sequence modulo powers of the n-th prime. A350999

The number of isomorphism classes of Szasz (uniquely non-associative) groupoids of order n. A180043

Triangle of coefficients in a Fibonacci-like sequence of polynomials. A39961

The number of sum indecomposable permutations which avoid the patterns 3124 and 4312. A228770

Number of length n+4 0..3 arrays with at most one downstep in every n consecutive neighbor pairs. A258734