Properties of the Number 84105

Eighty-Four Thousand One Hundred Five

Basics

Value: 84104 → 84105 → 84106

Parity: odd

Prime: No

Previous Prime: 84089

Next Prime: 84121

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 5 × 7 × 89

Divisors: 1, 3, 5, 7, 9, 15, 21, 27, 35, 45

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100100010001001

Octal: 244211

Duodecimal: 40809

Hexadecimal: 14889

Square: 7073651025

Square Root: 290.00862056152744

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

Sum of GCD of cycle lengths over all permutations of [n]. A346066

Expansion of g.f. x/(1 - 9·x - 8·x²). A15584

Middle q of three consecutive primes p,q,r, such that one adjacent prime is near, the other is far and the ratio of the differences (whichever of (r-q)/(q-p) or (q-p)/(r-q) is greater than 1) sets a record. A84105