9907904 has 28 divisors (see below), whose sum is σ = 19812000. Its totient is φ = 4915968.

The previous prime is 9907901. The next prime is 9907907. The reversal of 9907904 is 4097099.

It is an interprime number because it is at equal distance from previous prime (9907901) and next prime (9907907).

It is not an unprimeable number, because it can be changed into a prime (9907901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9017 + ... + 10055.

Almost surely, 2^9907904 is an apocalyptic number.

It is an amenable number.

9907904 is a deficient number, since it is larger than the sum of its proper divisors (9904096).

9907904 is a wasteful number, since it uses less digits than its factorization.

9907904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200 (or 1190 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 9907904 is about 3147.6823219633. The cubic root of 9907904 is about 214.7800454699.

The spelling of 9907904 in words is "nine million, nine hundred seven thousand, nine hundred four".