9172 has 6 divisors (see below), whose sum is σ = 16058. Its totient is φ = 4584.

The previous prime is 9161. The next prime is 9173. The reversal of 9172 is 2719.

9172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7056 + 2116 = 84^2 + 46^2 .

It is a magnanimous number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9173) by changing a digit.

9172 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1143 + ... + 1150.

2⁹¹⁷² is an apocalyptic number.

It is an amenable number.

9172 is a deficient number, since it is larger than the sum of its proper divisors (6886).

9172 is a wasteful number, since it uses less digits than its factorization.

9172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297 (or 2295 counting only the distinct ones).

The product of its digits is 126, while the sum is 19.

The square root of 9172 is about 95.7705591505. The cubic root of 9172 is about 20.9325119922.

It can be divided in two parts, 917 and 2, that added together give a palindrome (919).

The spelling of 9172 in words is "nine thousand, one hundred seventy-two".