90899235 has 96 divisors (see below), whose sum is σ = 188398080. Its totient is φ = 39688704.

The previous prime is 90899231. The next prime is 90899261. The reversal of 90899235 is 53299809.

It is not a de Polignac number, because 90899235 - 2² = 90899231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (90899231) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1245159 + ... + 1245231.

It is an arithmetic number, because the mean of its divisors is an integer number (1962480).

Almost surely, 2^90899235 is an apocalyptic number.

90899235 is an abundant number, since it is smaller than the sum of its proper divisors (97498845).

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

90899235 is a wasteful number, since it uses less digits than its factorization.

90899235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 90899235 is about 9534.1090302136. The cubic root of 90899235 is about 449.6280630393.

The spelling of 90899235 in words is "ninety million, eight hundred ninety-nine thousand, two hundred thirty-five".