Properties of the Number 91899

Ninety-One Thousand Eight Hundred Ninety-Nine

Basics

Value: 91898 → 91899 → 91900

Parity: odd

Prime: No

Previous Prime: 91873

Next Prime: 91909

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 10211

Divisors: 1, 3, 9, 10211, 30633, 91899

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110011011111011

Octal: 263373

Duodecimal: 45223

Hexadecimal: 166fb

Square: 8445426201

Square Root: 303.1484784721837

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 * (sum of the digits of k raised to their own power) + 1 is prime and sets a new record for number of digits. A109376

Decimal expansion of (1+sqrt(5)+sqrt(2*(5+sqrt(5))))/(2·e^(2*π/5)). A91899