Properties of the Number -199805

One Hundred Ninety-Nine Thousand Eight Hundred Five

Basics

Value: -199806 → -199805 → -199804

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 5 × 89 × 449

Divisors: 1, 5, 89, 445, 449, 2245, 39961, 199805

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

375 Try Today's Challenge

Representations

Binary: -110000110001111101

Octal: -606175

Duodecimal: -97765

Hexadecimal: -30c7d

Square: 39922038025

Square Root: 446.99552570467637

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

Squarefree n such that the elliptic curve n·y² = x³ - x arising in the "congruent number" problem has rank 3 and nontrivial SHA[2]. A62694

Number of n X 7 arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..1 n X 7 array. A220031