9887944 has 16 divisors (see below), whose sum is σ = 20225520. Its totient is φ = 4494480.

The previous prime is 9887939. The next prime is 9887971. The reversal of 9887944 is 4497889.

It is a plaindrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56094 + ... + 56269.

It is an arithmetic number, because the mean of its divisors is an integer number (1264095).

Almost surely, 2^9887944 is an apocalyptic number.

It is an amenable number.

9887944 is an abundant number, since it is smaller than the sum of its proper divisors (10337576).

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

9887944 is a wasteful number, since it uses less digits than its factorization.

9887944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112380 (or 112376 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The square root of 9887944 is about 3144.5101367304. The cubic root of 9887944 is about 214.6357198979.

The spelling of 9887944 in words is "nine million, eight hundred eighty-seven thousand, nine hundred forty-four".