85391317 has 8 divisors (see below), whose sum is σ = 94201920. Its totient is φ = 76755360.

The previous prime is 85391311. The next prime is 85391333. The reversal of 85391317 is 71319358.

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 85391317 - 2³ = 85391309 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 (85391311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42633 + ... + 44590.

It is an arithmetic number, because the mean of its divisors is an integer number (11775240).

Almost surely, 2^85391317 is an apocalyptic number.

It is an amenable number.

85391317 is a deficient number, since it is larger than the sum of its proper divisors (8810603).

85391317 is a wasteful number, since it uses less digits than its factorization.

85391317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87323.

The product of its digits is 22680, while the sum is 37.

The square root of 85391317 is about 9240.7422320937. The cubic root of 85391317 is about 440.3566615716.

The spelling of 85391317 in words is "eighty-five million, three hundred ninety-one thousand, three hundred seventeen".