9889138 has 32 divisors (see below), whose sum is σ = 18451584. Its totient is φ = 3877632.

The previous prime is 9889123. The next prime is 9889147. The reversal of 9889138 is 8319889.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8245 + ... + 9367.

It is an arithmetic number, because the mean of its divisors is an integer number (576612).

Almost surely, 2^9889138 is an apocalyptic number.

9889138 is a deficient number, since it is larger than the sum of its proper divisors (8562446).

9889138 is a wasteful number, since it uses less digits than its factorization.

9889138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186.

The product of its digits is 124416, while the sum is 46.

The square root of 9889138 is about 3144.6999856902. The cubic root of 9889138 is about 214.6443588605.

The spelling of 9889138 in words is "nine million, eight hundred eighty-nine thousand, one hundred thirty-eight".