9899804 has 12 divisors (see below), whose sum is σ = 17727864. Its totient is φ = 4834704.

The previous prime is 9899789. The next prime is 9899809. The reversal of 9899804 is 4089989.

9899804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9899804² = 196012238476832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9899809) 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, 28607 + ... + 28950.

It is an arithmetic number, because the mean of its divisors is an integer number (1477322).

Almost surely, 2^9899804 is an apocalyptic number.

It is an amenable number.

9899804 is a deficient number, since it is larger than the sum of its proper divisors (7828060).

9899804 is a wasteful number, since it uses less digits than its factorization.

9899804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57604 (or 57602 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 9899804 is about 3146.3953979117. The cubic root of 9899804 is about 214.7214998659.

The spelling of 9899804 in words is "nine million, eight hundred ninety-nine thousand, eight hundred four".