Properties of the Number -4239

Two Hundred Thirty-Nine

Basics

Value: -4240 → -4239 → -4238

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 157

Divisors: 1, 3, 9, 27, 157, 471, 1413, 4239

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1000010001111

Octal: -10217

Duodecimal: -2553

Hexadecimal: -108f

Square: 17969121

Square Root: 65.10760324263211

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

14-gonal (or tetradecagonal) numbers: a(n) = n*(6·n-5). A51866

Numbers m such that there are precisely 13 groups of order m. A292896

Number of multisets of positive integers whose right half (exclusive) sums to n. A360673

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction. A250755

Generalized Mancala solitaire (A002491); to get n-th term, start with n and successively round up to next 8 multiples of n-1, n-2, ..., 1, for n>=1. A113745

Positions of 1's in A274640: Greedy Queens on a spiral. Equivalently, positions of 0's in A274641. A273059

Number of ways writing 2ⁿ as unordered sums of 2 primes. A6307

Positive numbers whose product of digits is 12 times their sum. A62045

Numbers n such that n²+n+41 (Euler's "prime generating polynomial") is not squarefree. A97823

a(n) = ∑_k=0..n C(n,k) * C(3·n+k,k). A156886