279338113 has 2 divisors, whose sum is σ = 279338114. Its totient is φ = 279338112.

The previous prime is 279338099. The next prime is 279338119. The reversal of 279338113 is 311833972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142635249 + 136702864 = 11943^2 + 11692^2 .

It is a cyclic number.

It is not a de Polignac number, because 279338113 - 2²¹ = 277240961 is a prime.

It is not a weakly prime, because it can be changed into another prime (279338119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139669056 + 139669057.

It is an arithmetic number, because the mean of its divisors is an integer number (139669057).

Almost surely, 2^279338113 is an apocalyptic number.

It is an amenable number.

279338113 is a deficient number, since it is larger than the sum of its proper divisors (1).

279338113 is an equidigital number, since it uses as much as digits as its factorization.

279338113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 279338113 is about 16713.4111718703. The cubic root of 279338113 is about 653.6973609649.

It can be divided in two parts, 27933 and 8113, that added together give a triangular number (36046 = T₂₆₈).

The spelling of 279338113 in words is "two hundred seventy-nine million, three hundred thirty-eight thousand, one hundred thirteen".