Properties of the Number -945

Nine Hundred Forty-Five

Basics

Value: -946 → -945 → -944

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 5 × 7

Divisors: 1, 3, 5, 7, 9, 15, 21, 27, 35, 45

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1110110001

Octal: -1661

Duodecimal: -669

Hexadecimal: -3b1

Square: 893025

Square Root: 30.740852297878796

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+1)*(2-n)/2. A80956

Irregular triangle read by rows: coefficients C(j,k) of a partition transform for direct Lagrange inversion. A134685

Lower triangular array T(n,k) generator for group of arrays related to A001147 and A102625. A132382

a(n) = a(n-1) - a(n-3) with a(1)=0, a(2)=0, a(3)=1. A50935

Coefficients of unitary Hermite polynomials He_n(x). A66325

Triangle of coefficients in expansion of (x-1)*(x-3)*(x-5)*...*(x-(2·n-1)). A39757

T(n, k) = [x^k] (-1)ⁿ*∑_k=0..n E2(n, n-k)*(1+x)^n-k where E2(n, k) are the second-order Eulerian numbers. Triangle read by rows, T(n, k) for n >= 1 and 0 <= k <= n. A111999

2-adic factorial function. A55634

Irregular triangle T(n,k) of nonzero coefficients of the modified Hermite polynomials (n >= 0 and 0 <= k <= floor(n/2)). A96713

Matrix inverse of triangle A001497 of Bessel polynomials, read by rows; essentially the same as triangle A096713 of modified Hermite polynomials. A104556