Properties of the Number -401998

Four Hundred One Thousand Nine Hundred Ninety-Eight

Basics

Value: -401999 → -401998 → -401997

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 × 29 ² × 239

Divisors: 1, 2, 29, 58, 239, 478, 841, 1682, 6931, 13862

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

9108 Try Today's Challenge

Representations

Binary: -1100010001001001110

Octal: -1421116

Duodecimal: -17477A

Hexadecimal: -6224e

Square: 161602392004

Square Root: 634.033122163188

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

Number of perfect matchings in the graph C₆ x C_n. A232804

Square array T(n,k), n >= 1, k >= 1, read by antidiagonals, where T(n,k) = sqrt( ∏_a=1..n ∏_b=1..k (4·sin((2·a-1)*π/(2·n))² + 4·sin((2·b-1)*π/k)²) ). A341533

Number of perfect matchings in the graph C₇ X C_2n. A230033

Square array T(n,k), n >= 1, k >= 1, read by antidiagonals downwards: number of perfect matchings in the graph C_2n x C_k. A341741

a(n) = ( ∏_j=1..n ∏_k=1..n+1 (4·sin((2·j-1)*π/n)² + 4·sin((2·k-1)*π/(n+1))²) )^1/4. A341493