Properties of the Number -3940

Nine Hundred Forty

Basics

Value: -3941 → -3940 → -3939

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 5 × 197

Divisors: 1, 2, 4, 5, 10, 20, 197, 394, 788, 985

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: Yes

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: -111101100100

Octal: -7544

Duodecimal: -2344

Hexadecimal: -f64

Square: 15523600

Square Root: 62.76941930590086

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

Sequence is {a(4,n)}, where a(m,n) is defined at sequence A110665. A110669

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 35", based on the 5-celled von Neumann neighborhood. A269817

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

Number of combinatory separations of normal multisets of weight n. A269134

Expansion of ∏_m>=1 (1 + q^m)^m; number of partitions of n into distinct parts, where n different parts of size n are available. A26007

a(n) = n concatenated with n + 1. A1704

Numbers n such that Bernoulli number B_n has denominator 330. A272183

Numbers k such that 2^k + 15 is prime. A57197

T(n,k)=Number of -k..k arrays x(0..n+2) of n+3 elements with zero sum and nonzero second and third differences. A200204

Total number of parts in all overpartitions of n. A235792