979947559 has 2 divisors, whose sum is σ = 979947560. Its totient is φ = 979947558.

The previous prime is 979947533. The next prime is 979947587. The reversal of 979947559 is 955749979.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 979947559 - 2⁷ = 979947431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 979947559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (979947589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489973779 + 489973780.

It is an arithmetic number, because the mean of its divisors is an integer number (489973780).

Almost surely, 2^979947559 is an apocalyptic number.

979947559 is a deficient number, since it is larger than the sum of its proper divisors (1).

979947559 is an equidigital number, since it uses as much as digits as its factorization.

979947559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32148900, while the sum is 64.

The square root of 979947559 is about 31304.1140906431. The cubic root of 979947559 is about 993.2706707039.

The spelling of 979947559 in words is "nine hundred seventy-nine million, nine hundred forty-seven thousand, five hundred fifty-nine".