90398170 has 32 divisors (see below), whose sum is σ = 169090560. Its totient is φ = 34758720.

The previous prime is 90398159. The next prime is 90398171. The reversal of 90398170 is 7189309.

It is not an unprimeable number, because it can be changed into a prime (90398171) 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, 49636 + ... + 51424.

It is an arithmetic number, because the mean of its divisors is an integer number (5284080).

Almost surely, 2^90398170 is an apocalyptic number.

90398170 is a deficient number, since it is larger than the sum of its proper divisors (78692390).

90398170 is a wasteful number, since it uses less digits than its factorization.

90398170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 90398170 is about 9507.7952228684. The cubic root of 90398170 is about 448.8003768679.

The spelling of 90398170 in words is "ninety million, three hundred ninety-eight thousand, one hundred seventy".