2649839879 has 2 divisors, whose sum is σ = 2649839880. Its totient is φ = 2649839878.

The previous prime is 2649839851. The next prime is 2649839891. The reversal of 2649839879 is 9789389462.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2649839879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2649839839) 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, 1324919939 + 1324919940.

It is an arithmetic number, because the mean of its divisors is an integer number (1324919940).

Almost surely, 2^2649839879 is an apocalyptic number.

2649839879 is a deficient number, since it is larger than the sum of its proper divisors (1).

2649839879 is an equidigital number, since it uses as much as digits as its factorization.

2649839879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47029248, while the sum is 65.

The square root of 2649839879 is about 51476.5954488057. The cubic root of 2649839879 is about 1383.7996314046.

The spelling of 2649839879 in words is "two billion, six hundred forty-nine million, eight hundred thirty-nine thousand, eight hundred seventy-nine".