9866944 has 28 divisors (see below), whose sum is σ = 19728688. Its totient is φ = 4896000.

The previous prime is 9866903. The next prime is 9866951. The reversal of 9866944 is 4496689.

It is a junction number, because it is equal to n+sod(n) for n = 9866894 and 9866903.

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, 9154 + ... + 10174.

It is an arithmetic number, because the mean of its divisors is an integer number (704596).

Almost surely, 2^9866944 is an apocalyptic number.

It is an amenable number.

9866944 is a deficient number, since it is larger than the sum of its proper divisors (9861744).

9866944 is a wasteful number, since it uses less digits than its factorization.

9866944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184 (or 1174 counting only the distinct ones).

The product of its digits is 373248, while the sum is 46.

The square root of 9866944 is about 3141.1692090685. The cubic root of 9866944 is about 214.4836645334.

The spelling of 9866944 in words is "nine million, eight hundred sixty-six thousand, nine hundred forty-four".