985193717 has 2 divisors, whose sum is σ = 985193718. Its totient is φ = 985193716.

The previous prime is 985193687. The next prime is 985193723. The reversal of 985193717 is 717391589.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 907154161 + 78039556 = 30119^2 + 8834^2 .

It is a cyclic number.

It is not a de Polignac number, because 985193717 - 2²² = 980999413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985193747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492596858 + 492596859.

It is an arithmetic number, because the mean of its divisors is an integer number (492596859).

Almost surely, 2^985193717 is an apocalyptic number.

It is an amenable number.

985193717 is a deficient number, since it is larger than the sum of its proper divisors (1).

985193717 is an equidigital number, since it uses as much as digits as its factorization.

985193717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 50.

The square root of 985193717 is about 31387.7956696548. The cubic root of 985193717 is about 995.0400115220.

The spelling of 985193717 in words is "nine hundred eighty-five million, one hundred ninety-three thousand, seven hundred seventeen".