Properties of the Number 89990

Eighty-Nine Thousand Nine Hundred Ninety

Basics

Value: 89989 → 89990 → 89991

Parity: even

Prime: No

Previous Prime: 89989

Next Prime: 90001

Digit Sum: 35

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 × 8999

Divisors: 1, 2, 5, 10, 8999, 17998, 44995, 89990

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 10101111110000110

Octal: 257606

Duodecimal: 440B2

Hexadecimal: 15f86

Square: 8098200100

Square Root: 299.98333287034467

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) = 100·n² - 10. A158490

Numbers k such that φ(k) + φ(k+1) = k+2. A67797

Array read by antidiagonals: Place k points in general position on each side of a regular n-gon and join every pair of the k·n boundary points by a chord; T(n,k) (n >= 3, k >= 0) gives the number of vertices in the resulting planar graph. A392261

a(n) = n step nested walk based on (A004001[n]+ (-1)^lastsum). A89990