268393949 has 2 divisors, whose sum is σ = 268393950. Its totient is φ = 268393948.

The previous prime is 268393907. The next prime is 268393963. The reversal of 268393949 is 949393862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 268369924 + 24025 = 16382^2 + 155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268393949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 268393949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268393999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134196974 + 134196975.

It is an arithmetic number, because the mean of its divisors is an integer number (134196975).

Almost surely, 2^268393949 is an apocalyptic number.

It is an amenable number.

268393949 is a deficient number, since it is larger than the sum of its proper divisors (1).

268393949 is an equidigital number, since it uses as much as digits as its factorization.

268393949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2519424, while the sum is 53.

The square root of 268393949 is about 16382.7332579152. The cubic root of 268393949 is about 645.0463272215.

The spelling of 268393949 in words is "two hundred sixty-eight million, three hundred ninety-three thousand, nine hundred forty-nine".