Properties of the Number 99839

Ninety-Nine Thousand Eight Hundred Thirty-Nine

Basics

Value: 99838 → 99839 → 99840

Parity: odd

Prime: Yes

Previous Prime: 99833

Next Prime: 99859

Digit Sum: 38

Digital Root: 2

Palindrome: No

Factorization: 99839

Divisors: 1, 99839

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000010111111111

Octal: 302777

Duodecimal: 4993B

Hexadecimal: 185ff

Square: 9967825921

Square Root: 315.97310012088053

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 relatively prime Lyndon compositions (aperiodic necklaces of positive integers) with sum n. A318731

a(n+3) = 3·a(n+2) - 2·a(n), a(0) = -1, a(1) = 1, a(2) = 3. A108898

Least prime p such that σ(x)=σ(p) has exactly n solutions. A115374

Last prime subtrahend at 10ⁿ in A146757. A146758

a(n) = 5·b₅(n)+4, where b₅ lists the indices of zeros of the sequence A261305: u(n) = abs(u(n-1)-gcd(u(n-1),5·n-1)), u(1) = 1. A186257

a(n) = -10·a(n-1) - 5·a(n-2) with a(0) = 1, a(1) = -11. A99839