Properties of the Number 90985

Ninety Thousand Nine Hundred Eighty-Five

Basics

Value: 90984 → 90985 → 90986

Parity: odd

Prime: No

Previous Prime: 90977

Next Prime: 90989

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 5 × 31 × 587

Divisors: 1, 5, 31, 155, 587, 2935, 18197, 90985

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110001101101001

Octal: 261551

Duodecimal: 447A1

Hexadecimal: 16369

Square: 8278270225

Square Root: 301.6371992974341

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 n for which there are exactly seven k such that n = k + (product of nonzero digits of k). A96928

G.f. is the polynomial (1-x³) * (1-x⁶) * (1-x⁹) * (1-x¹²) * (1-x¹⁵) * (1-x¹⁸) * (1-x²¹) / (1-x)⁷. A162595

Triangle read by rows: T(n,k) is the number of dissections of a convex n-gon by nonintersecting diagonals, having exactly k triangles (n >= 2, k >= 0). A90985