90232899 has 16 divisors (see below), whose sum is σ = 123836832. Its totient is φ = 58399488.

The previous prime is 90232811. The next prime is 90232921. The reversal of 90232899 is 99823209.

It is not a de Polignac number, because 90232899 - 2⁸ = 90232643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90232899.

It is not an unprimeable number, because it can be changed into a prime (90232099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94207 + ... + 95159.

It is an arithmetic number, because the mean of its divisors is an integer number (7739802).

Almost surely, 2^90232899 is an apocalyptic number.

90232899 is a deficient number, since it is larger than the sum of its proper divisors (33603933).

90232899 is a wasteful number, since it uses less digits than its factorization.

90232899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 90232899 is about 9499.0999047278. The cubic root of 90232899 is about 448.5267026851.

The spelling of 90232899 in words is "ninety million, two hundred thirty-two thousand, eight hundred ninety-nine".