2579644979 has 2 divisors, whose sum is σ = 2579644980. Its totient is φ = 2579644978.

The previous prime is 2579644973. The next prime is 2579644981. The reversal of 2579644979 is 9794469752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2579644979 - 2⁸ = 2579644723 is a prime.

It is a Sophie Germain prime.

Together with 2579644981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2579644973) 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, 1289822489 + 1289822490.

It is an arithmetic number, because the mean of its divisors is an integer number (1289822490).

Almost surely, 2^2579644979 is an apocalyptic number.

2579644979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2579644979 is an equidigital number, since it uses as much as digits as its factorization.

2579644979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34292160, while the sum is 62.

The square root of 2579644979 is about 50790.2055420137. The cubic root of 2579644979 is about 1371.4710571933.

The spelling of 2579644979 in words is "two billion, five hundred seventy-nine million, six hundred forty-four thousand, nine hundred seventy-nine".