9998904 has 16 divisors (see below), whose sum is σ = 24997320. Its totient is φ = 3332960.

The previous prime is 9998903. The next prime is 9998929. The reversal of 9998904 is 4098999.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998903) 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, 208287 + ... + 208334.

Almost surely, 2^9998904 is an apocalyptic number.

It is an amenable number.

9998904 is an abundant number, since it is smaller than the sum of its proper divisors (14998416).

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

9998904 is a wasteful number, since it uses less digits than its factorization.

9998904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416630 (or 416626 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 9998904 is about 3162.1043626041. The cubic root of 9998904 is about 215.4355978476.

The spelling of 9998904 in words is "nine million, nine hundred ninety-eight thousand, nine hundred four".