172000839 has 8 divisors (see below), whose sum is σ = 229397872. Its totient is φ = 114635520.

The previous prime is 172000823. The next prime is 172000867. The reversal of 172000839 is 938000271.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 172000839 - 2⁴ = 172000823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172000889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11607 + ... + 21879.

It is an arithmetic number, because the mean of its divisors is an integer number (28674734).

Almost surely, 2^172000839 is an apocalyptic number.

172000839 is a deficient number, since it is larger than the sum of its proper divisors (57397033).

172000839 is a wasteful number, since it uses less digits than its factorization.

172000839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15857.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 172000839 is about 13114.9090351401. The cubic root of 172000839 is about 556.1306809004.

The spelling of 172000839 in words is "one hundred seventy-two million, eight hundred thirty-nine", and thus it is an aban number.