9944172 has 36 divisors (see below), whose sum is σ = 28728336. Its totient is φ = 2841120.

The previous prime is 9944171. The next prime is 9944177. The reversal of 9944172 is 2714499.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (9944171) 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, 19479 + ... + 19982.

Almost surely, 2^9944172 is an apocalyptic number.

It is an amenable number.

9944172 is an abundant number, since it is smaller than the sum of its proper divisors (18784164).

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

9944172 is a wasteful number, since it uses less digits than its factorization.

9944172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39478 (or 39473 counting only the distinct ones).

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

The square root of 9944172 is about 3153.4381236993. The cubic root of 9944172 is about 215.0417946511.

The spelling of 9944172 in words is "nine million, nine hundred forty-four thousand, one hundred seventy-two".