Properties of the Number 84915

Eighty-Four Thousand Nine Hundred Fifteen

Basics

Value: 84914 → 84915 → 84916

Parity: odd

Prime: No

Previous Prime: 84913

Next Prime: 84919

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 5 × 17 × 37

Divisors: 1, 3, 5, 9, 15, 17, 27, 37, 45, 51

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10100101110110011

Octal: 245663

Duodecimal: 41183

Hexadecimal: 14bb3

Square: 7210557225

Square Root: 291.40178448321143

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

Lucas and Lehmer numbers with parameters (1 +- sqrt(-7))/2. A107920

a(n) = -a(n-1) - 2·a(n-2). A1607

a(n) is the unique odd positive solution·of 2ⁿ = 7x²+y². A77020

Expansion of 1/(1 - 3·x + 4·x²). A49072

Row sums of the Riordan array (1-4·x+4·x², x*(1-2·x)) (A167431). A167433

a(0)=1, a(1)=1; thereafter a(n) = -a(n-1) - 2·a(n-2). A169998

a(n) = 5·a(n-1) - 8·a(n-2), with a(0)=0, a(1)=1. A190969

Number of permutations of length n which avoid the patterns 1234, 2431, 3241. A116789

Numbers k such that σ(k) = ψ(k) + τ(k) + ω(k)⁷. A392385

a(n) = 8ⁿ - 2ⁿ. A248217