12172329 has 16 divisors (see below), whose sum is σ = 19420800. Its totient is φ = 7490448.

The previous prime is 12172327. The next prime is 12172333. The reversal of 12172329 is 92327121.

It is not a de Polignac number, because 12172329 - 2¹ = 12172327 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12172327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16989 + ... + 17690.

It is an arithmetic number, because the mean of its divisors is an integer number (1213800).

Almost surely, 2^12172329 is an apocalyptic number.

It is an amenable number.

12172329 is a deficient number, since it is larger than the sum of its proper divisors (7248471).

12172329 is a wasteful number, since it uses less digits than its factorization.

12172329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34701 (or 34695 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 12172329 is about 3488.8864985838. The cubic root of 12172329 is about 230.0335741788.

The spelling of 12172329 in words is "twelve million, one hundred seventy-two thousand, three hundred twenty-nine".