979773577 has 2 divisors, whose sum is σ = 979773578. Its totient is φ = 979773576.

The previous prime is 979773559. The next prime is 979773601. The reversal of 979773577 is 775377979.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 725817481 + 253956096 = 26941^2 + 15936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-979773577 is a prime.

It is not a weakly prime, because it can be changed into another prime (979773547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489886788 + 489886789.

It is an arithmetic number, because the mean of its divisors is an integer number (489886789).

Almost surely, 2^979773577 is an apocalyptic number.

It is an amenable number.

979773577 is a deficient number, since it is larger than the sum of its proper divisors (1).

979773577 is an equidigital number, since it uses as much as digits as its factorization.

979773577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20420505, while the sum is 61.

The square root of 979773577 is about 31301.3350673737. The cubic root of 979773577 is about 993.2118847535.

The spelling of 979773577 in words is "nine hundred seventy-nine million, seven hundred seventy-three thousand, five hundred seventy-seven".