Properties of the Number 91989

Ninety-One Thousand Nine Hundred Eighty-Nine

Basics

Value: 91988 → 91989 → 91990

Parity: odd

Prime: No

Previous Prime: 91969

Next Prime: 91997

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 3407

Divisors: 1, 3, 9, 27, 3407, 10221, 30663, 91989

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110011101010101

Octal: 263525

Duodecimal: 45299

Hexadecimal: 16755

Square: 8461976121

Square Root: 303.29688425699334

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

G.f. A(x) satisfies: A( 3·A(x)³ - 27·A(x)⁴ ) = 3·x³. A291315

Numbers that are binary cyclic right-rotating progressive sum of digits (see A091821) of exactly 1 natural number. A91989