979677902779 has 2 divisors, whose sum is σ = 979677902780. Its totient is φ = 979677902778.

The previous prime is 979677902719. The next prime is 979677902807. The reversal of 979677902779 is 977209776979.

It is a strong prime.

It is an emirp because it is prime and its reverse (977209776979) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 979677902779 - 2¹¹ = 979677900731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 979677902699 and 979677902708.

It is not a weakly prime, because it can be changed into another prime (979677902719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489838951389 + 489838951390.

It is an arithmetic number, because the mean of its divisors is an integer number (489838951390).

Almost surely, 2^979677902779 is an apocalyptic number.

979677902779 is a deficient number, since it is larger than the sum of its proper divisors (1).

979677902779 is an equidigital number, since it uses as much as digits as its factorization.

979677902779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1323248724, while the sum is 79.

The spelling of 979677902779 in words is "nine hundred seventy-nine billion, six hundred seventy-seven million, nine hundred two thousand, seven hundred seventy-nine".