195439717 has 16 divisors (see below), whose sum is σ = 229662720. Its totient is φ = 164458800.

The previous prime is 195439703. The next prime is 195439721. The reversal of 195439717 is 717934591.

195439717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 195439717 - 2⁷ = 195439589 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 (195434717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4617 + ... + 20302.

It is an arithmetic number, because the mean of its divisors is an integer number (14353920).

Almost surely, 2^195439717 is an apocalyptic number.

It is an amenable number.

195439717 is a deficient number, since it is larger than the sum of its proper divisors (34223003).

195439717 is a wasteful number, since it uses less digits than its factorization.

195439717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24984.

The product of its digits is 238140, while the sum is 46.

The square root of 195439717 is about 13979.9755722247. The cubic root of 195439717 is about 580.3245478491.

The spelling of 195439717 in words is "one hundred ninety-five million, four hundred thirty-nine thousand, seven hundred seventeen".