Properties of the Number 80979

Eighty Thousand Nine Hundred Seventy-Nine

Basics

Value: 80978 → 80979 → 80980

Parity: odd

Prime: No

Previous Prime: 80963

Next Prime: 80989

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 3 × 26993

Divisors: 1, 3, 26993, 80979

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110001010011

Octal: 236123

Duodecimal: 3AA43

Hexadecimal: 13c53

Square: 6557598441

Square Root: 284.568093784247

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

Number T(n,k) of partitions of n where each part i is marked with a word of length i over a k-ary alphabet whose letters appear in alphabetical order and all k letters occur at least once in the partition; triangle T(n,k), n>=0, 0<=k<=n, read by rows. A261719

Number of regions in a polygon whose boundary consists of n+2 equally spaced points around a semicircle and three equally spaced points along the diameter (a total of n+3 points). See Comments for precise definition. A333642

Number of partitions of n where each part i is marked with a word of length i over a ternary alphabet whose letters appear in alphabetical order and all three letters occur at least once in the partition. A293367

Odd numbers n divisible by 3 such that for all k >= 1 the numbers n·2^k - 1 and n·2^k + 1 do not form a twin prime pair. A237592

Each tree encoded in A014486 mapped to the corresponding branch-reduced zigzag-tree (positions in A014486). A80979