Properties of the Number -2839

Eight Hundred Thirty-Nine

Basics

Value: -2840 → -2839 → -2838

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 17 × 167

Divisors: 1, 17, 167, 2839

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: Yes

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: -101100010111

Octal: -5427

Duodecimal: -1787

Hexadecimal: -b17

Square: 8059921

Square Root: 53.28226721902888

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

Second term in the continued fraction expansion of StieltjesGamma[n]. A66034

Heptagonal numbers (or 7-gonal numbers): n*(5·n-3)/2. A566

Centered triangular numbers: a(n) = 3·n*(n-1)/2 + 1. A5448

a(n) = A026626(2·n, n-2). A26629

Number of series-reduced locally disjoint rooted trees with n unlabeled leaves. A316697

Discriminants of imaginary quadratic fields with class number 26 (negated). A351664

Position of first zero in the n-th differences of the squarefree numbers (A005117), or 0 if it does not appear. A377042

Numbers k with the property that it is possible to write the base 2 expansion of k as concat(a₂,b₂), with a₂>0 and b₂>0 such that, converting a₂ and b₂ to base 10 as a and b, we have σ(a + b) = σ(k). A258843

Sum of the fifth largest parts in the partitions of n into 7 squarefree parts. A308956

Numbers that are the sum of nine fourth powers in three or more ways. A345587