279448313 has 2 divisors, whose sum is σ = 279448314. Its totient is φ = 279448312.

The previous prime is 279448297. The next prime is 279448319. The reversal of 279448313 is 313844972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186267904 + 93180409 = 13648^2 + 9653^2 .

It is a cyclic number.

It is not a de Polignac number, because 279448313 - 2⁴ = 279448297 is a prime.

It is not a weakly prime, because it can be changed into another prime (279448319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139724156 + 139724157.

It is an arithmetic number, because the mean of its divisors is an integer number (139724157).

Almost surely, 2^279448313 is an apocalyptic number.

It is an amenable number.

279448313 is a deficient number, since it is larger than the sum of its proper divisors (1).

279448313 is an equidigital number, since it uses as much as digits as its factorization.

279448313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 41.

The square root of 279448313 is about 16716.7076004816. The cubic root of 279448313 is about 653.7833117355.

The spelling of 279448313 in words is "two hundred seventy-nine million, four hundred forty-eight thousand, three hundred thirteen".