Properties of the Number -139815

One Hundred Thirty-Nine Thousand Eight Hundred Fifteen

Basics

Value: -139816 → -139815 → -139814

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 13 × 239

Divisors: 1, 3, 5, 9, 13, 15, 39, 45, 65, 117

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100010001000100111

Octal: -421047

Duodecimal: -68AB3

Hexadecimal: -22227

Square: 19548234225

Square Root: 373.9184403048344

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

Amicable numbers. A63990

Larger of amicable pair. A2046

Amicable pairs. A259180

Amicable pairs (x < y) ordered by nondecreasing sum (x + y) and then by increasing x. A259933

Odd amicable numbers. A262625

Amicable pairs with the property that the number of divisors of the smaller member is greater than the number of divisors of the larger member. A328063

Larger of amicable pair (x, y) as they are listed in A259933. A260087

Amicable pairs of odd numbers. A262623

Numbers k such that σ(k) = σ(σ(k)-k). A206708

Amicable pairs with the property that the number of divisors of the smaller member is twice the number of divisors of the larger member. A328065