9988984 has 16 divisors (see below), whose sum is σ = 19715400. Its totient is φ = 4731552.

The previous prime is 9988981. The next prime is 9988991. The reversal of 9988984 is 4898899.

9988984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9988981) 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, 32707 + ... + 33010.

Almost surely, 2^9988984 is an apocalyptic number.

It is an amenable number.

9988984 is a deficient number, since it is larger than the sum of its proper divisors (9726416).

9988984 is a wasteful number, since it uses less digits than its factorization.

9988984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65742 (or 65738 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 55.

The square root of 9988984 is about 3160.5353976819. The cubic root of 9988984 is about 215.3643290941.

The spelling of 9988984 in words is "nine million, nine hundred eighty-eight thousand, nine hundred eighty-four".