9887984 has 20 divisors (see below), whose sum is σ = 19217520. Its totient is φ = 4928640.

The previous prime is 9887971. The next prime is 9887993. The reversal of 9887984 is 4897889.

It is a congruent number.

It is an unprimeable number.

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, 5789 + ... + 7299.

It is an arithmetic number, because the mean of its divisors is an integer number (960876).

Almost surely, 2^9887984 is an apocalyptic number.

It is an amenable number.

9887984 is a deficient number, since it is larger than the sum of its proper divisors (9329536).

9887984 is a wasteful number, since it uses less digits than its factorization.

9887984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928 (or 1922 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 53.

The square root of 9887984 is about 3144.5164970151. The cubic root of 9887984 is about 214.6360093217.

The spelling of 9887984 in words is "nine million, eight hundred eighty-seven thousand, nine hundred eighty-four".