172000239 has 4 divisors (see below), whose sum is σ = 229333656. Its totient is φ = 114666824.

The previous prime is 172000229. The next prime is 172000259. The reversal of 172000239 is 932000271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172000239 - 2⁷ = 172000111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172000219) 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 3 ways as a sum of consecutive naturals, for example, 28666704 + ... + 28666709.

It is an arithmetic number, because the mean of its divisors is an integer number (57333414).

Almost surely, 2^172000239 is an apocalyptic number.

172000239 is a deficient number, since it is larger than the sum of its proper divisors (57333417).

172000239 is an equidigital number, since it uses as much as digits as its factorization.

172000239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57333416.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 172000239 is about 13114.8861603904. The cubic root of 172000239 is about 556.1300342392.

The spelling of 172000239 in words is "one hundred seventy-two million, two hundred thirty-nine", and thus it is an aban number.