9988996 has 18 divisors (see below), whose sum is σ = 18571658. Its totient is φ = 4700160.

The previous prime is 9988991. The next prime is 9989027. The reversal of 9988996 is 6998899.

It can be written as a sum of positive squares in 3 ways, for example, as 1368900 + 8620096 = 1170^2 + 2936^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9988996.

It is not an unprimeable number, because it can be changed into a prime (9988991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3165 + ... + 5476.

Almost surely, 2^9988996 is an apocalyptic number.

It is an amenable number.

9988996 is a deficient number, since it is larger than the sum of its proper divisors (8582662).

9988996 is a wasteful number, since it uses less digits than its factorization.

9988996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8679 (or 8660 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 58.

The square root of 9988996 is about 3160.5372960938. The cubic root of 9988996 is about 215.3644153348.

The spelling of 9988996 in words is "nine million, nine hundred eighty-eight thousand, nine hundred ninety-six".