268439579 has 2 divisors, whose sum is σ = 268439580. Its totient is φ = 268439578.

The previous prime is 268439491. The next prime is 268439593. The reversal of 268439579 is 975934862.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268439579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 268439579.

It is not a weakly prime, because it can be changed into another prime (268439599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134219789 + 134219790.

It is an arithmetic number, because the mean of its divisors is an integer number (134219790).

Almost surely, 2^268439579 is an apocalyptic number.

268439579 is a deficient number, since it is larger than the sum of its proper divisors (1).

268439579 is an equidigital number, since it uses as much as digits as its factorization.

268439579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 53.

The square root of 268439579 is about 16384.1258234915. The cubic root of 268439579 is about 645.0828802016.

The spelling of 268439579 in words is "two hundred sixty-eight million, four hundred thirty-nine thousand, five hundred seventy-nine".