9886986388 has 24 divisors (see below), whose sum is σ = 17709499808. Its totient is φ = 4827193056.

The previous prime is 9886986353. The next prime is 9886986397. The reversal of 9886986388 is 8836896889.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 9886986388.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 951670 + ... + 962002.

Almost surely, 2^9886986388 is an apocalyptic number.

It is an amenable number.

9886986388 is a deficient number, since it is larger than the sum of its proper divisors (7822513420).

9886986388 is a wasteful number, since it uses less digits than its factorization.

9886986388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15943 (or 15941 counting only the distinct ones).

The product of its digits is 286654464, while the sum is 73.

The square root of 9886986388 is about 99433.3263448428. The cubic root of 9886986388 is about 2146.2879077371.

The spelling of 9886986388 in words is "nine billion, eight hundred eighty-six million, nine hundred eighty-six thousand, three hundred eighty-eight".