268940369 has 2 divisors, whose sum is σ = 268940370. Its totient is φ = 268940368.

The previous prime is 268940363. The next prime is 268940377. The reversal of 268940369 is 963049862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251634769 + 17305600 = 15863^2 + 4160^2 .

It is a cyclic number.

It is not a de Polignac number, because 268940369 - 2¹² = 268936273 is a prime.

It is a super-2 number, since 2×268940369² = 144657844155712322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (268940363) 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, 134470184 + 134470185.

It is an arithmetic number, because the mean of its divisors is an integer number (134470185).

Almost surely, 2^268940369 is an apocalyptic number.

It is an amenable number.

268940369 is a deficient number, since it is larger than the sum of its proper divisors (1).

268940369 is an equidigital number, since it uses as much as digits as its factorization.

268940369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 268940369 is about 16399.4014829810. The cubic root of 268940369 is about 645.4837778318.

The spelling of 268940369 in words is "two hundred sixty-eight million, nine hundred forty thousand, three hundred sixty-nine".