Properties of the Number 8940

Eight Thousand Nine Hundred Forty

Basics

Value: 8939 → 8940 → 8941

Parity: even

Prime: No

Previous Prime: 8933

Next Prime: 8941

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 5 × 149

Divisors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10001011101100

Octal: 21354

Duodecimal: 5210

Hexadecimal: 22ec

Square: 79923600

Square Root: 94.55157322858251

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

a(n) = n*(31·n + 1)/2. A22289

Numbers divisible by prime(d) for each digit d in their base-9 representation, none of which may be zero. A256879

Values of m such that N = (am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,3. A64238

Record gaps between prime quadruplets. A113404

T(n,k) = Number of n X k 0..1 arrays with row sums unimodal and column sums inverted unimodal. A223782

Triangle interpolating the swinging factorial (A056040) restricted to even indices with its binomial transform. Same as interpolating bilateral Schroeder paths (A026375) with the central binomial coefficients (A000984). A163841

Number of subsets of {1, 2, ..., n} containing n and having <=9 pairwise coprime elements. A186993

Numbers k such that σ(τ(φ(k))) = φ(τ(σ(k))). A226118

Values taken both by σ (A000203) and by antisigma (A024816), where σ is the sum of divisors function and antisigma is the sum of the non-divisors of n less than n function. A352810

Irregular table read by rows: T(n,k) is the number of k-gons, k>=2, among all distinct circles that can be constructed from the 4 vertices and the equally spaced 4·n points placed on the sides of a square when every pair of the 4 + 4·n points are connected by a circle and where the points lie at the ends of the circle's diameter. A373109