Properties of the Number -199999

One Hundred Ninety-Nine Thousand Nine Hundred Ninety-Nine

Basics

Value: -200000 → -199999 → -199998

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 46

Digital Root: 1

Palindrome: No

Factorization: 199999

Divisors: 1, 199999

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -110000110100111111

Octal: -606477

Duodecimal: -978A7

Hexadecimal: -30d3f

Square: 39999600001

Square Root: 447.21247746457163

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

Smallest number whose sum of digits is n. A51885

Smallest prime containing exactly n 9's. A37071

Primes that contain digits 1 and 9 only. A20457

Smallest prime with digit sum n, or 0 if no such prime exists. A67180

Primes of the form 1999...999. A55558

Smallest prime ending in exactly n 9's. A65582

Near-repdigit primes with 9 as repeated digit. A105975

a(n) = 2·10^n-1 - 1. A67272

Primes of the form 2^r*5^s - 1. A77313

If k is a number with exactly two distinct decimal digits, say a and b, neither of which is 0 (i.e., a member of A101594), define the self-complement of k, SC(k), to be the number obtained by replacing a with b and vice versa. E.g. SC(232233) = 323322. Sequence contains primes p such that SC(p) is also a prime. A83983