99115590 has 64 divisors (see below), whose sum is σ = 286179840. Its totient is φ = 21461760.

The previous prime is 99115547. The next prime is 99115619. The reversal of 99115590 is 9551199.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8431 + ... + 16410.

It is an arithmetic number, because the mean of its divisors is an integer number (4471560).

Almost surely, 2^99115590 is an apocalyptic number.

99115590 is an abundant number, since it is smaller than the sum of its proper divisors (187064250).

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

99115590 is a wasteful number, since it uses less digits than its factorization.

99115590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24877.

The product of its (nonzero) digits is 18225, while the sum is 39.

The square root of 99115590 is about 9955.6812926088. The cubic root of 99115590 is about 462.7864736044.

The spelling of 99115590 in words is "ninety-nine million, one hundred fifteen thousand, five hundred ninety".