Properties of the Number 99990

Ninety-Nine Thousand Nine Hundred Ninety

Basics

Value: 99989 → 99990 → 99991

Parity: even

Prime: No

Previous Prime: 99989

Next Prime: 99991

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 5 × 11 × 101

Divisors: 1, 2, 3, 5, 6, 9, 10, 11, 15, 18

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000011010010110

Octal: 303226

Duodecimal: 49A46

Hexadecimal: 18696

Square: 9998000100

Square Root: 316.21195423323263

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

a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 99. A93299

Numbers m such that the largest digit in the decimal expansion of 1/m is 1. A333402

a(n) = n⁵ - n. A61167

Numbers whose set of base 10 digits is {0,9}. A97256

a(n+2) = 100·a(n+1) - a(n), a(1)=0, a(2)=10. A154027

Denominators of "Farey fraction" approximations to e. A119015

Denominators of approximations to e. A6259

Largest n-digit multiple of the n-th prime. A91801

Number of n-letter strings over a ten letter alphabet where no letter appears exactly five times. A272503

Denominator of a sequence of fractions converging to e. A340738