9902904 has 32 divisors (see below), whose sum is σ = 27008640. Its totient is φ = 3000800.

The previous prime is 9902897. The next prime is 9902909. The reversal of 9902904 is 4092099.

It is a happy number.

9902904 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9902909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18492 + ... + 19019.

It is an arithmetic number, because the mean of its divisors is an integer number (844020).

Almost surely, 2^9902904 is an apocalyptic number.

It is an amenable number.

9902904 is an abundant number, since it is smaller than the sum of its proper divisors (17105736).

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

9902904 is a wasteful number, since it uses less digits than its factorization.

9902904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37531 (or 37527 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 9902904 is about 3146.8879865670. The cubic root of 9902904 is about 214.7439099790.

The spelling of 9902904 in words is "nine million, nine hundred two thousand, nine hundred four".