979319557 has 2 divisors, whose sum is σ = 979319558. Its totient is φ = 979319556.

The previous prime is 979319447. The next prime is 979319567. The reversal of 979319557 is 755913979.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 975375361 + 3944196 = 31231^2 + 1986^2 .

It is an emirp because it is prime and its reverse (755913979) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 979319557 - 2¹¹ = 979317509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 979319498 and 979319507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (979319567) 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 as a sum of consecutive naturals, namely, 489659778 + 489659779.

It is an arithmetic number, because the mean of its divisors is an integer number (489659779).

Almost surely, 2^979319557 is an apocalyptic number.

It is an amenable number.

979319557 is a deficient number, since it is larger than the sum of its proper divisors (1).

979319557 is an equidigital number, since it uses as much as digits as its factorization.

979319557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2679075, while the sum is 55.

The square root of 979319557 is about 31294.0818206894. The cubic root of 979319557 is about 993.0584453119.

The spelling of 979319557 in words is "nine hundred seventy-nine million, three hundred nineteen thousand, five hundred fifty-seven".