Properties of the Number 39990

Thirty-Nine Thousand Nine Hundred Ninety

Basics

Value: 39989 → 39990 → 39991

Parity: even

Prime: No

Previous Prime: 39989

Next Prime: 40009

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 × 31 × 43

Divisors: 1, 2, 3, 5, 6, 10, 15, 30, 31, 43

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1001110000110110

Octal: 116066

Duodecimal: 1B186

Hexadecimal: 9c36

Square: 1599200100

Square Root: 199.97499843730466

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

Euler transform of A027656(n-1). A35528

Smallest multiple of n whose digits sum to n. A2998

Record gaps between prime quadruplets. A113404

Record (maximal) gaps between prime triples (p, p+4, p+6). A201596

Number of closed walks of length n on the complete graph on 7 nodes from a given node. A109501

Number of 7-bead necklaces of n colors not allowing reversal, with no adjacent beads having the same color. A208537

Number of aperiodic necklaces of n beads of 6 colors; dimensions of free Lie algebras. A32164

Numbers that are the sum of seven fifth powers in two or more ways. A345605

Numbers that are the sum of seven fifth powers in exactly two ways. A346279

Numbers whose sum of the squares of divisors is also a square number. A46655