9447664 has 20 divisors (see below), whose sum is σ = 19101456. Its totient is φ = 4518272.

The previous prime is 9447629. The next prime is 9447667. The reversal of 9447664 is 4667449.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9447667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12469 + ... + 13204.

Almost surely, 2^9447664 is an apocalyptic number.

It is an amenable number.

9447664 is an abundant number, since it is smaller than the sum of its proper divisors (9653792).

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

9447664 is a wasteful number, since it uses less digits than its factorization.

9447664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25704 (or 25698 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The square root of 9447664 is about 3073.7052558760. The cubic root of 9447664 is about 211.4015399021.

The spelling of 9447664 in words is "nine million, four hundred forty-seven thousand, six hundred sixty-four".