90399258 has 48 divisors (see below), whose sum is σ = 201038760. Its totient is φ = 29348352.

The previous prime is 90399203. The next prime is 90399263. The reversal of 90399258 is 85299309.

90399258 is a `hidden beast` number, since 9 + 0 + 399 + 258 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 44796249 + 45603009 = 6693^2 + 6753^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116560 + ... + 117332.

Almost surely, 2^90399258 is an apocalyptic number.

90399258 is an abundant number, since it is smaller than the sum of its proper divisors (110639502).

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

90399258 is a wasteful number, since it uses less digits than its factorization.

90399258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943 (or 940 counting only the distinct ones).

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

The square root of 90399258 is about 9507.8524389054. The cubic root of 90399258 is about 448.8021773942.

The spelling of 90399258 in words is "ninety million, three hundred ninety-nine thousand, two hundred fifty-eight".