90199910292 has 48 divisors (see below), whose sum is σ = 228282147072. Its totient is φ = 27607813120.

The previous prime is 90199910287. The next prime is 90199910293. The reversal of 90199910292 is 29201999109.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90199910293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5383788 + ... + 5400515.

It is an arithmetic number, because the mean of its divisors is an integer number (4755878064).

Almost surely, 2^90199910292 is an apocalyptic number.

It is an amenable number.

90199910292 is an abundant number, since it is smaller than the sum of its proper divisors (138082236780).

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

90199910292 is a wasteful number, since it uses less digits than its factorization.

90199910292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10784368 (or 10784366 counting only the distinct ones).

The product of its (nonzero) digits is 236196, while the sum is 51.

The spelling of 90199910292 in words is "ninety billion, one hundred ninety-nine million, nine hundred ten thousand, two hundred ninety-two".