9887958 has 12 divisors (see below), whose sum is σ = 21423948. Its totient is φ = 3295980.

The previous prime is 9887939. The next prime is 9887971. The reversal of 9887958 is 8597889.

9887958 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 a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 274648 + ... + 274683.

It is an arithmetic number, because the mean of its divisors is an integer number (1785329).

Almost surely, 2^9887958 is an apocalyptic number.

9887958 is an abundant number, since it is smaller than the sum of its proper divisors (11535990).

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

9887958 is a wasteful number, since it uses less digits than its factorization.

9887958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549339 (or 549336 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 54.

The square root of 9887958 is about 3144.5123628315. The cubic root of 9887958 is about 214.6358211963.

The spelling of 9887958 in words is "nine million, eight hundred eighty-seven thousand, nine hundred fifty-eight".