Properties of the Number 79989

Seventy-Nine Thousand Nine Hundred Eighty-Nine

Basics

Value: 79988 → 79989 → 79990

Parity: odd

Prime: No

Previous Prime: 79987

Next Prime: 79997

Digit Sum: 42

Digital Root: 6

Palindrome: No

Factorization: 3 × 7 × 13 × 293

Divisors: 1, 3, 7, 13, 21, 39, 91, 273, 293, 879

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011100001110101

Octal: 234165

Duodecimal: 3A359

Hexadecimal: 13875

Square: 6398240121

Square Root: 282.82326636965354

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) = smallest multiple of 7 with a digit sum = n. A77493

Coefficients in the expansion of ([s] + [2s]x + [3s]x² + ...)/([r] + [2r]x + [3r]x² + ...); [ ] = floor, r = sqrt(3), s = sqrt(2). A279629

Numbers that require exactly 8 iterations to determine that they are happy or not (A007770 and A031177). A193996

Smallest multiple of n whose sum of digits is greater than n. A269332

Poincaré series [or Poincare series] (or Molien series) for mod 2 cohomology of universal W-group W(3). A14696

Number of permutations satisfying -k <= p(i) - i <= r and p(i) - i not in I, i=1..n, with k=3, r=3, I={1,2}. A79989