Properties of the Number -138599

One Hundred Thirty-Eight Thousand Five Hundred Ninety-Nine

Basics

Value: -138600 → -138599 → -138598

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 35

Digital Root: 8

Palindrome: No

Factorization: 138599

Divisors: 1, 138599

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100001110101100111

Octal: -416547

Duodecimal: -6825B

Hexadecimal: -21d67

Square: 19209682801

Square Root: 372.2888663390298

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

Primes p such that τ(p-1)+τ(p+1) is larger than for any previous term. (Smallest prime sandwiched between more composite numbers.) A90481

Primes of the form p + (p² - 1)/8, where p is also prime. A165352

First column of A083798. A83800

Numbers k for which d(k-1) + d(k+1) is a record, where d(k) is the number of divisors of k. A189828

Primes with property that when cubed all even digits occur together and all odd digits occur together. A30482

a(n) = (a(n-1)*a(n-4) + a(n-5)*a(n-8)) / a(n-9), a(0) = ... = a(8) = 1. A190783

a(n) is the least prime p such that there are exactly n pairs of primes (q,r) with p > q > r such that q | r + p and r | q + p. A344776