9090904 has 8 divisors (see below), whose sum is σ = 17045460. Its totient is φ = 4545448.

The previous prime is 9090901. The next prime is 9090919. The reversal of 9090904 is 4090909.

9090904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9090901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 568174 + ... + 568189.

Almost surely, 2^9090904 is an apocalyptic number.

It is an amenable number.

9090904 is a deficient number, since it is larger than the sum of its proper divisors (7954556).

9090904 is a wasteful number, since it uses less digits than its factorization.

9090904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136369 (or 1136365 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 9090904 is about 3015.1126015458. The cubic root of 9090904 is about 208.7063632838.

The spelling of 9090904 in words is "nine million, ninety thousand, nine hundred four".