9887980 has 24 divisors (see below), whose sum is σ = 21858480. Its totient is φ = 3746880.

The previous prime is 9887971. The next prime is 9887993. The reversal of 9887980 is 897889.

9887980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam 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, 12631 + ... + 13390.

It is an arithmetic number, because the mean of its divisors is an integer number (910770).

Almost surely, 2^9887980 is an apocalyptic number.

It is an amenable number.

9887980 is an abundant number, since it is smaller than the sum of its proper divisors (11970500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9887980 is a wasteful number, since it uses less digits than its factorization.

9887980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26049 (or 26047 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 49.

The square root of 9887980 is about 3144.5158609872. The cubic root of 9887980 is about 214.6359803793.

The spelling of 9887980 in words is "nine million, eight hundred eighty-seven thousand, nine hundred eighty".