6479779739 has 2 divisors, whose sum is σ = 6479779740. Its totient is φ = 6479779738.

The previous prime is 6479779699. The next prime is 6479779759. The reversal of 6479779739 is 9379779746.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6479779739 is a prime.

It is not a weakly prime, because it can be changed into another prime (6479779759) 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, 3239889869 + 3239889870.

It is an arithmetic number, because the mean of its divisors is an integer number (3239889870).

Almost surely, 2^6479779739 is an apocalyptic number.

6479779739 is a deficient number, since it is larger than the sum of its proper divisors (1).

6479779739 is an equidigital number, since it uses as much as digits as its factorization.

6479779739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 126023688, while the sum is 68.

The square root of 6479779739 is about 80497.0790712309. The cubic root of 6479779739 is about 1864.3183798102.

The spelling of 6479779739 in words is "six billion, four hundred seventy-nine million, seven hundred seventy-nine thousand, seven hundred thirty-nine".