Properties of the Number 13439

Thirteen Thousand Four Hundred Thirty-Nine

Basics

Value: 13438 → 13439 → 13440

Parity: odd

Prime: No

Previous Prime: 13421

Next Prime: 13441

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 89 × 151

Divisors: 1, 89, 151, 13439

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11010001111111

Octal: 32177

Duodecimal: 793B

Hexadecimal: 347f

Square: 180606721

Square Root: 115.92670097954138

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

Expansion of 1 / (1 + x² - x³) in powers of x. A77961

a(n) = n!/3 - 1. A139173

Number of parts in all compositions of n into distinct parts. A97910

Expansion of 1/(1+x²+x³). A77962

Least k such that the Collatz (3x+1) iteration starting with k has "dropping time" A122437(n). A122442

Expansion of 1/(1 + 2·x + x² - x³). A77990

G.f. satisfies A(x) = 1 + x·A(x)³ / (1 - x·A(x)²)². A367238

Numbers k > 1 such that k mod ord2(k) is even, where ord2(k) is the order of 2 mod k. A36260

Expansion of 1/(1-2·x+x²+x³). A77941

Numbers of the form ((6k+5)²+9)/2 or 2(3k+4)²-9. A214493