279956959 has 2 divisors, whose sum is σ = 279956960. Its totient is φ = 279956958.

The previous prime is 279956933. The next prime is 279956977. The reversal of 279956959 is 959659972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 279956959 - 2⁹ = 279956447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 279956897 and 279956906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (279959959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139978479 + 139978480.

It is an arithmetic number, because the mean of its divisors is an integer number (139978480).

Almost surely, 2^279956959 is an apocalyptic number.

279956959 is a deficient number, since it is larger than the sum of its proper divisors (1).

279956959 is an equidigital number, since it uses as much as digits as its factorization.

279956959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13778100, while the sum is 61.

The square root of 279956959 is about 16731.9143853894. The cubic root of 279956959 is about 654.1797388997.

The spelling of 279956959 in words is "two hundred seventy-nine million, nine hundred fifty-six thousand, nine hundred fifty-nine".