Properties of the Number -489397

Four Hundred Eighty-Nine Thousand Three Hundred Ninety-Seven

Basics

Value: -489398 → -489397 → -489396

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 40

Digital Root: 4

Palindrome: No

Factorization: 31 × 15787

Divisors: 1, 31, 15787, 489397

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1110111011110110101

Octal: -1673665

Duodecimal: -1B7271

Hexadecimal: -777b5

Square: 239509423609

Square Root: 699.5691531221199

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

Constant term in the reduction of the polynomial 1+x+x²+...+xⁿ by x³->x²+x+1. See Comments. A192804

a(1) = least k such that 1/3 < H(k) - 1/3; a(2) = least k such that H(a(1)) - H(3) < H(k) - H(a(1)), and for n > 2, a(n) = least k such that H(a(n-1)) - H(a(n-2)) > H(k) - H(a(n-1)), where H = harmonic number. A225605