Properties of the Number 89721

Eighty-Nine Thousand Seven Hundred Twenty-One

Basics

Value: 89720 → 89721 → 89722

Parity: odd

Prime: No

Previous Prime: 89689

Next Prime: 89753

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 3323

Divisors: 1, 3, 9, 27, 3323, 9969, 29907, 89721

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101111001111001

Octal: 257171

Duodecimal: 43B09

Hexadecimal: 15e79

Square: 8049857841

Square Root: 299.53463906533415

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 λ calculus terms of size n, where size(λ x.M) = 2 + size(M), size(M N) = 2 + size(M) + size(N), and size(V) = 1 + i for a variable V bound by the i-th enclosing λ (corresponding to a binary encoding). A114851

Smallest k such that both k-n and k+n are primes and there are no primes between them. A87378

a(n) is the smallest number m, such that m+n is the next prime and m-n is the previous prime. A282690

a(0) = 1, a(1) = 0, a(2) = 1; a(n) = a(n-1) + ∑_k=0..n-3 a(k) * a(n-k-3). A357307

Primes ending in 1 such that floor(p/7) ends in a digit > 3. A89721