Properties of the Number -78939

Seventy-Eight Thousand Nine Hundred Thirty-Nine

Basics

Value: -78940 → -78939 → -78938

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7 ² × 179

Divisors: 1, 3, 7, 9, 21, 49, 63, 147, 179, 441

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10011010001011011

Octal: -232133

Duodecimal: -39823

Hexadecimal: -1345b

Square: 6231365721

Square Root: 280.9608513654527

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

Numbers k such that (k, σ(k)) lies on a circle with integral radius centered at the origin, i.e., k² + σ(k)² is a square. A66764

Array defined in A064643 read from left to right (cf. A107783). A64644

Array defined in A064643 read in direction in which it was created. A107783

Number of multisets of nonempty words with a total of n letters over 7-ary alphabet such that within each word every letter of the alphabet is at least as frequent as the subsequent alphabet letter. A292722

Expansion of 1/((1-2x)(1-4x)(1-7x)(1-12x)). A25975