9985984 has 28 divisors (see below), whose sum is σ = 19917664. Its totient is φ = 4967424.

The previous prime is 9985973. The next prime is 9985993. The reversal of 9985984 is 4895899.

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, 21337 + ... + 21799.

Almost surely, 2^9985984 is an apocalyptic number.

It is an amenable number.

9985984 is a deficient number, since it is larger than the sum of its proper divisors (9931680).

9985984 is a wasteful number, since it uses less digits than its factorization.

9985984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 802 counting only the distinct ones).

The product of its digits is 933120, while the sum is 52.

The square root of 9985984 is about 3160.0607589095. The cubic root of 9985984 is about 215.3427667517.

The spelling of 9985984 in words is "nine million, nine hundred eighty-five thousand, nine hundred eighty-four".