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Properties of the Number -440

Four Hundred Forty

Basics

Value: -441 → -440 → -439

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 2 3 × 5 × 11

Divisors: 1, 2, 4, 5, 8, 10, 11, 20, 22, 40

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -110111000

Octal: -670

Duodecimal: -308

Hexadecimal: -1b8

Square: 193600

Square Root: 20.97617696340303

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

Expansion of reciprocal of Hauptmodul for Gamma0(18). A92848
a(n) = nearest integer to n2 * sin(sqrt(n)). A274088
Triangle read by rows: matrix 5th power of the Stirling-1 triangle A008275. A39817
McKay-Thompson series of class 10E for the Monster group with a(0) = 1. A132980
McKay-Thompson series of class 10E for the Monster group with a(0) = 2. A138516
Triangle T(n, k, m) = t(n,m)/( t(k,m) * t(n-k,m) ) with T(n, 0, m) = T(n, n, m) = 1, where t(n, m) = ∏j=1..n ∏i=1..j-1 ( 1 - (m+1)*(i+1) ) and m = 2, read by rows. A156691
McKay-Thompson series of class 20C for the Monster group with a(0) = -2. A145740
Triangle T(n, k, m) = t(n,m)/( t(k,m) * t(n-k,m) ) with T(n, 0, m) = T(n, n, m) = 1, where t(n, m) = ∏j=1..n ∏i=1..j-1 ( 1 - (m+1)*(3·i-2) ) and m = 2, read by rows. A156725
Dirichlet inverse of A341530, gcd(n*σ(A003961(n)), σ(n)*A003961(n)). A346235
McKay-Thompson series of class 10E for Monster. A58101