979717 has 2 divisors, whose sum is σ = 979718. Its totient is φ = 979716.

The previous prime is 979709. The next prime is 979747. The reversal of 979717 is 717979.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 630436 + 349281 = 794^2 + 591^2 .

It is an emirp because it is prime and its reverse (717979) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 979717 - 2³ = 979709 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 979717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (979747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489858 + 489859.

It is an arithmetic number, because the mean of its divisors is an integer number (489859).

2⁹⁷⁹⁷¹⁷ is an apocalyptic number.

It is an amenable number.

979717 is a deficient number, since it is larger than the sum of its proper divisors (1).

979717 is an equidigital number, since it uses as much as digits as its factorization.

979717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27783, while the sum is 40.

The square root of 979717 is about 989.8065467555. The cubic root of 979717 is about 99.3192766721.

The spelling of 979717 in words is "nine hundred seventy-nine thousand, seven hundred seventeen".