9216644 has 12 divisors (see below), whose sum is σ = 16257024. Its totient is φ = 4571784.

The previous prime is 9216631. The next prime is 9216661. The reversal of 9216644 is 4466129.

It is a happy number.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 9216644.

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, 8564 + ... + 9579.

It is an arithmetic number, because the mean of its divisors is an integer number (1354752).

Almost surely, 2^9216644 is an apocalyptic number.

It is an amenable number.

9216644 is a deficient number, since it is larger than the sum of its proper divisors (7040380).

9216644 is a wasteful number, since it uses less digits than its factorization.

9216644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18274 (or 18272 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 9216644 is about 3035.8926199719. The cubic root of 9216644 is about 209.6641949804.

The spelling of 9216644 in words is "nine million, two hundred sixteen thousand, six hundred forty-four".