Properties of the Number 489

Four Hundred Eighty-Nine

Basics

Value: 488 → 489 → 490

Parity: odd

Prime: No

Previous Prime: 487

Next Prime: 491

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 163

Divisors: 1, 3, 163, 489

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111101001

Octal: 751

Duodecimal: 349

Hexadecimal: 1e9

Square: 239121

Square Root: 22.11334438749598

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 partitions of n into relatively prime parts. Also aperiodic partitions. A837

Octahedral numbers: a(n) = n*(2·n² + 1)/3. A5900

Number of "ON" cells at n-th stage in the "Ulam-Warburton" two-dimensional cellular automaton. A147562

Numbers that are the sum of 5 positive 5th powers. A3350

Nonprime numbers k such that binomial(k+p,k) mod k = 1, where p=10. A133630

a(n) = (2·n - 1)*(8·n² - 8·n + 3)/3. A63496

-1 + number of partitions of n. A65

a(n) = 3·prime(n). A1748

a(n) = 10·n + 9. A17377

Expansion of (1+x²)/((1-x)²*(1-x²)²). A5993