Properties of the Number 89991

Eighty-Nine Thousand Nine Hundred Ninety-One

Basics

Value: 89990 → 89991 → 89992

Parity: odd

Prime: No

Previous Prime: 89989

Next Prime: 90001

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 3 ⁴ × 11 × 101

Divisors: 1, 3, 9, 11, 27, 33, 81, 99, 101, 297

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10101111110000111

Octal: 257607

Duodecimal: 440B3

Hexadecimal: 15f87

Square: 8098380081

Square Root: 299.98499962498124

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

a(n) = 9*(10ⁿ - 1). A86580

Numbers which can be expressed as the product of numbers made of only threes. A161141

Numbers which can be expressed as the product of numbers made of only nines. A161147

a(n) = (8·n+1)*(8·n+7). A1533

a(n) = -(1/120)*n*(n - 3)*(n - 6)*(n² - 21·n + 8). A319931

Character of extremal vertex operator algebra of rank 27/2. A28535

n = k² - (reversal of k)² for two different values of k. A87672

Inverse modulo 2 binomial transform of 10ⁿ. A100681

Maximum lengths of chaotic walks based on the A004001 sequence. A89991