Properties of the Number -107991

One Hundred Seven Thousand Nine Hundred Ninety-One

Basics

Value: -107992 → -107991 → -107990

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 13 ² × 71

Divisors: 1, 3, 9, 13, 39, 71, 117, 169, 213, 507

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

9108 Try Today's Challenge

Representations

Binary: -11010010111010111

Octal: -322727

Duodecimal: -525B3

Hexadecimal: -1a5d7

Square: 11662056081

Square Root: 328.619841153878

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

Least number that requires exactly n iterations of f(x) = reverse(x) - maxdigit(x) to reach zero. A97156

Numbers n such that 93·2ⁿ-1 is prime. A50572