99090909100 has 108 divisors (see below), whose sum is σ = 224690009544. Its totient is φ = 37927285760.

The previous prime is 99090909077. The next prime is 99090909101. The reversal of 99090909100 is 190909099.

It is not an unprimeable number, because it can be changed into a prime (99090909101) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9498087 + ... + 9508513.

Almost surely, 2^99090909100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99090909100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112345004772).

99090909100 is an abundant number, since it is smaller than the sum of its proper divisors (125599100444).

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

99090909100 is a wasteful number, since it uses less digits than its factorization.

99090909100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10612 (or 10576 counting only the distinct ones).

The product of its (nonzero) digits is 59049, while the sum is 46.

The spelling of 99090909100 in words is "ninety-nine billion, ninety million, nine hundred nine thousand, one hundred".