789998317 has 2 divisors, whose sum is σ = 789998318. Its totient is φ = 789998316.

The previous prime is 789998311. The next prime is 789998351. The reversal of 789998317 is 713899987.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 585107721 + 204890596 = 24189^2 + 14314^2 .

It is a cyclic number.

It is not a de Polignac number, because 789998317 - 2²⁷ = 655780589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (789998311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394999158 + 394999159.

It is an arithmetic number, because the mean of its divisors is an integer number (394999159).

Almost surely, 2^789998317 is an apocalyptic number.

It is an amenable number.

789998317 is a deficient number, since it is larger than the sum of its proper divisors (1).

789998317 is an equidigital number, since it uses as much as digits as its factorization.

789998317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6858432, while the sum is 61.

The square root of 789998317 is about 28106.9087058680. The cubic root of 789998317 is about 924.4328900723.

The spelling of 789998317 in words is "seven hundred eighty-nine million, nine hundred ninety-eight thousand, three hundred seventeen".