100000899999 has 192 divisors, whose sum is σ = 205860336640. Its totient is φ = 46651334400.

The previous prime is 100000899989. The next prime is 100000900121. The reversal of 100000899999 is 999998000001.

It is not a de Polignac number, because 100000899999 - 2⁸ = 100000899743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100000899979) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 10995444 + ... + 11004534.

Almost surely, 2^100000899999 is an apocalyptic number.

100000899999 is an abundant number, since it is smaller than the sum of its proper divisors (105859436641).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100000899999 is a wasteful number, since it uses less digits than its factorization.

100000899999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9179 (or 9162 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 54.

It can be divided in two parts, 100000 and 899999, that added together give a palindrome (999999).

The spelling of 100000899999 in words is "one hundred billion, eight hundred ninety-nine thousand, nine hundred ninety-nine".