Properties of the Number 80009

Eighty Thousand Nine

Basics

Value: 80008 → 80009 → 80010

Parity: odd

Prime: No

Previous Prime: 79999

Next Prime: 80021

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 19 × 4211

Divisors: 1, 19, 4211, 80009

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10011100010001001

Octal: 234211

Duodecimal: 3A375

Hexadecimal: 13889

Square: 6401440081

Square Root: 282.85862192975486

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

Number of partitions p of n such that m(p) < m(c(p)), where m = maximal multiplicity of parts, and c = conjugate. A240726

Least k such that k·10ⁿ-9, k·10ⁿ-7, k·10ⁿ-3 and k·10ⁿ-1 are all prime. A64432

Row sums of number triangle A107027. A107028

Smallest m such that A259043(m) = n. A259046

Number of bipartite partitions. A2768

Reduced tangent numbers: 2ⁿ*(2²ⁿ - 1)*|B_2n|/n, where B_n = Bernoulli numbers. A2105

Poupard's triangle: triangle of numbers arising in enumeration of binary trees. A8301

Triangle of numbers arising in enumeration of binary trees. A107652

Triangle of Poupard numbers g_n(k) read by rows, n>=1, 1<=k<=2n-1. A236934

Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=2, r=3, I={2}. A80009