90165950 has 48 divisors (see below), whose sum is σ = 194347680. Its totient is φ = 30481920.

The previous prime is 90165947. The next prime is 90165967. The reversal of 90165950 is 5956109.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 90165950.

It is a congruent number.

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, 23786 + ... + 27314.

It is an arithmetic number, because the mean of its divisors is an integer number (4048910).

Almost surely, 2^90165950 is an apocalyptic number.

90165950 is an abundant number, since it is smaller than the sum of its proper divisors (104181730).

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

90165950 is a wasteful number, since it uses less digits than its factorization.

90165950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3621 (or 3616 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 90165950 is about 9495.5752853632. The cubic root of 90165950 is about 448.4157459490.

The spelling of 90165950 in words is "ninety million, one hundred sixty-five thousand, nine hundred fifty".