268439593 has 2 divisors, whose sum is σ = 268439594. Its totient is φ = 268439592.

The previous prime is 268439579. The next prime is 268439599. The reversal of 268439593 is 395934862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149891049 + 118548544 = 12243^2 + 10888^2 .

It is a cyclic number.

It is not a de Polignac number, because 268439593 - 2⁹ = 268439081 is a prime.

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

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134219796 + 134219797.

It is an arithmetic number, because the mean of its divisors is an integer number (134219797).

Almost surely, 2^268439593 is an apocalyptic number.

It is an amenable number.

268439593 is a deficient number, since it is larger than the sum of its proper divisors (1).

268439593 is an equidigital number, since it uses as much as digits as its factorization.

268439593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1399680, while the sum is 49.

The square root of 268439593 is about 16384.1262507343. The cubic root of 268439593 is about 645.0828914160.

The spelling of 268439593 in words is "two hundred sixty-eight million, four hundred thirty-nine thousand, five hundred ninety-three".