279113957 has 2 divisors, whose sum is σ = 279113958. Its totient is φ = 279113956.

The previous prime is 279113929. The next prime is 279113959. The reversal of 279113957 is 759311972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224220676 + 54893281 = 14974^2 + 7409^2 .

It is a cyclic number.

It is not a de Polignac number, because 279113957 - 2²² = 274919653 is a prime.

Together with 279113959, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (279113959) 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, 139556978 + 139556979.

It is an arithmetic number, because the mean of its divisors is an integer number (139556979).

Almost surely, 2^279113957 is an apocalyptic number.

It is an amenable number.

279113957 is a deficient number, since it is larger than the sum of its proper divisors (1).

279113957 is an equidigital number, since it uses as much as digits as its factorization.

279113957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 119070, while the sum is 44.

The square root of 279113957 is about 16706.7039538025. The cubic root of 279113957 is about 653.5224601417.

The spelling of 279113957 in words is "two hundred seventy-nine million, one hundred thirteen thousand, nine hundred fifty-seven".