279317 has 2 divisors, whose sum is σ = 279318. Its totient is φ = 279316.

The previous prime is 279311. The next prime is 279329. The reversal of 279317 is 713972.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148996 + 130321 = 386^2 + 361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-279317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 279317.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 279317.

It is not a weakly prime, because it can be changed into another prime (279311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139658 + 139659.

It is an arithmetic number, because the mean of its divisors is an integer number (139659).

2²⁷⁹³¹⁷ is an apocalyptic number.

It is an amenable number.

279317 is a deficient number, since it is larger than the sum of its proper divisors (1).

279317 is an equidigital number, since it uses as much as digits as its factorization.

279317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2646, while the sum is 29.

The square root of 279317 is about 528.5044938314. The cubic root of 279317 is about 65.3680891247.

The spelling of 279317 in words is "two hundred seventy-nine thousand, three hundred seventeen".