172095839 has 2 divisors, whose sum is σ = 172095840. Its totient is φ = 172095838.

The previous prime is 172095727. The next prime is 172095841. The reversal of 172095839 is 938590271.

It is a strong prime.

It is an emirp because it is prime and its reverse (938590271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172095839 - 2¹² = 172091743 is a prime.

It is a super-2 number, since 2×172095839² = 59233955602227842, which contains 22 as substring.

Together with 172095841, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172095839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172095139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86047919 + 86047920.

It is an arithmetic number, because the mean of its divisors is an integer number (86047920).

Almost surely, 2^172095839 is an apocalyptic number.

172095839 is a deficient number, since it is larger than the sum of its proper divisors (1).

172095839 is an equidigital number, since it uses as much as digits as its factorization.

172095839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 172095839 is about 13118.5303673849. The cubic root of 172095839 is about 556.2330499569.

The spelling of 172095839 in words is "one hundred seventy-two million, ninety-five thousand, eight hundred thirty-nine".