279739013 has 2 divisors, whose sum is σ = 279739014. Its totient is φ = 279739012.

The previous prime is 279738983. The next prime is 279739027. The reversal of 279739013 is 310937972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179077924 + 100661089 = 13382^2 + 10033^2 .

It is a cyclic number.

It is not a de Polignac number, because 279739013 - 2¹⁰ = 279737989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (279739093) 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, 139869506 + 139869507.

It is an arithmetic number, because the mean of its divisors is an integer number (139869507).

Almost surely, 2^279739013 is an apocalyptic number.

It is an amenable number.

279739013 is a deficient number, since it is larger than the sum of its proper divisors (1).

279739013 is an equidigital number, since it uses as much as digits as its factorization.

279739013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71442, while the sum is 41.

The square root of 279739013 is about 16725.4002343741. The cubic root of 279739013 is about 654.0099355696.

The spelling of 279739013 in words is "two hundred seventy-nine million, seven hundred thirty-nine thousand, thirteen".