Properties of the Number 87389

Eighty-Seven Thousand Three Hundred Eighty-Nine

Basics

Value: 87388 → 87389 → 87390

Parity: odd

Prime: No

Previous Prime: 87383

Next Prime: 87403

Digit Sum: 35

Digital Root: 8

Palindrome: No

Factorization: 31 × 2819

Divisors: 1, 31, 2819, 87389

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101010101011101

Octal: 252535

Duodecimal: 426A5

Hexadecimal: 1555d

Square: 7636837321

Square Root: 295.6163053689698

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

Define Z(1) = {1}, and Z(n+1) = Z(n) (+) { x+y, with·and y in Z(n) } for any n>0 (where (+) stands for the symmetric difference of two sets). Then a(n) gives the number of elements in Z(n). A263402

a(1) = 3; a(n+1) is the least prime formed by adding one or more digits to the digit reversal of a(n). A87389