Properties of the Number -397978

Three Hundred Ninety-Seven Thousand Nine Hundred Seventy-Eight

Basics

Value: -397979 → -397978 → -397977

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 43

Digital Root: 7

Palindrome: No

Factorization: 2 × 7 ² × 31 × 131

Divisors: 1, 2, 7, 14, 31, 49, 62, 98, 131, 217

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1100001001010011010

Octal: -1411232

Duodecimal: -17238A

Hexadecimal: -6129a

Square: 158386488484

Square Root: 630.8549754103553

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 compositions of 5·n-2 into parts 4 and 5. A369850

a(n) = ∑_{k=0..floor(n/2)} binomial(k+1,2·n-4·k+1). A392489