317485439 has 2 divisors, whose sum is σ = 317485440. Its totient is φ = 317485438.

The previous prime is 317485433. The next prime is 317485453. The reversal of 317485439 is 934584713.

It is a weak prime.

It is an emirp because it is prime and its reverse (934584713) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-317485439 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 317485439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317485433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158742719 + 158742720.

It is an arithmetic number, because the mean of its divisors is an integer number (158742720).

Almost surely, 2^317485439 is an apocalyptic number.

317485439 is a deficient number, since it is larger than the sum of its proper divisors (1).

317485439 is an equidigital number, since it uses as much as digits as its factorization.

317485439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 44.

The square root of 317485439 is about 17818.1210850078. The cubic root of 317485439 is about 682.1940657668.

The spelling of 317485439 in words is "three hundred seventeen million, four hundred eighty-five thousand, four hundred thirty-nine".