85939344317 has 4 divisors (see below), whose sum is σ = 85940098140. Its totient is φ = 85938590496.

The previous prime is 85939344311. The next prime is 85939344443. The reversal of 85939344317 is 71344393958.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 48077578756 + 37861765561 = 219266^2 + 194581^2 .

It is a cyclic number.

It is not a de Polignac number, because 85939344317 - 2²⁰ = 85938295741 is a prime.

It is a super-3 number, since 3×85939344317³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85939344311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166898 + ... + 446915.

It is an arithmetic number, because the mean of its divisors is an integer number (21485024535).

Almost surely, 2^85939344317 is an apocalyptic number.

It is an amenable number.

85939344317 is a deficient number, since it is larger than the sum of its proper divisors (753823).

85939344317 is a wasteful number, since it uses less digits than its factorization.

85939344317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753822.

The product of its digits is 9797760, while the sum is 56.

The spelling of 85939344317 in words is "eighty-five billion, nine hundred thirty-nine million, three hundred forty-four thousand, three hundred seventeen".