Properties of the Number -1239

Two Hundred Thirty-Nine

Basics

Value: -1240 → -1239 → -1238

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 7 × 59

Divisors: 1, 3, 7, 21, 59, 177, 413, 1239

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10011010111

Octal: -2327

Duodecimal: -873

Hexadecimal: -4d7

Square: 1535121

Square Root: 35.199431813596085

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

Values of n such that L(9) and N(9) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A226929

Expansion of ∏_k>=1 1/(1+x^k)^k² in powers of x. A284896

G.f. A(x) satisfies: 1 = ∑_n>=0 xⁿ / (A(x)² - x)^2·n+1 * [ ∑_k=0..n C(n,k)² * x^k * A(x)^n-2·k ]². A258053

Expansion of e.g.f. x·cos(tanh(x)), odd powers only. A9088

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 81", based on the 5-celled von Neumann neighborhood. A270101

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 339", based on the 5-celled von Neumann neighborhood. A271292

Numbers k such that both k and k + 1 are Niven numbers in base 2 (A049445). A330931

Triangle T read by rows: diagonal differences of triangle A037027. A55830

Number of integer partitions of n having a part that can be written as a nonnegative linear combination of the other (possibly equal) parts. A364913

Expansion of 1/((1-x)²*(1-x²)*(1-x³)). A601