90164990 has 8 divisors (see below), whose sum is σ = 162297000. Its totient is φ = 36065992.

The previous prime is 90164989. The next prime is 90164993. The reversal of 90164990 is 9946109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90164993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4508240 + ... + 4508259.

It is an arithmetic number, because the mean of its divisors is an integer number (20287125).

Almost surely, 2^90164990 is an apocalyptic number.

90164990 is a deficient number, since it is larger than the sum of its proper divisors (72132010).

90164990 is a wasteful number, since it uses less digits than its factorization.

90164990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9016506.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 90164990 is about 9495.5247353688. The cubic root of 90164990 is about 448.4141545107.

The spelling of 90164990 in words is "ninety million, one hundred sixty-four thousand, nine hundred ninety".