9172944 has 60 divisors (see below), whose sum is σ = 28010112. Its totient is φ = 2779200.

The previous prime is 9172913. The next prime is 9172949. The reversal of 9172944 is 4492719.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 9172899 and 9172908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9172949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1312 + ... + 4479.

Almost surely, 2^9172944 is an apocalyptic number.

It is an amenable number.

9172944 is an abundant number, since it is smaller than the sum of its proper divisors (18837168).

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

9172944 is a wasteful number, since it uses less digits than its factorization.

9172944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5816 (or 5807 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 9172944 is about 3028.6868441620. The cubic root of 9172944 is about 209.3323010574.

The spelling of 9172944 in words is "nine million, one hundred seventy-two thousand, nine hundred forty-four".