Properties of the Number 89442

Eighty-Nine Thousand Four Hundred Forty-Two

Basics

Value: 89441 → 89442 → 89443

Parity: even

Prime: No

Previous Prime: 89431

Next Prime: 89443

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 4969

Divisors: 1, 2, 3, 6, 9, 18, 4969, 9938, 14907, 29814

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101110101100010

Octal: 256542

Duodecimal: 43916

Hexadecimal: 15d62

Square: 7999871364

Square Root: 299.0685540139585

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 subsets of [n] avoiding 3-term arithmetic progressions and containing n if n>0. A334893

Number of connected numbers (A029827) with binary order (A029837) <= n. A36387

Decimal expansion of 1 + φ = φ² = (3 + sqrt(5))/2. A104457

Primes p such that (p-11)/10 is also a prime. A89442

G.f. A(x) satisfies A(x) = C(x) / (1 - x·A(x)²), where C(x) is the g.f. of A000108. A381826