268990349 has 2 divisors, whose sum is σ = 268990350. Its totient is φ = 268990348.

The previous prime is 268990331. The next prime is 268990357. The reversal of 268990349 is 943099862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 247432900 + 21557449 = 15730^2 + 4643^2 .

It is a cyclic number.

It is not a de Polignac number, because 268990349 - 2⁸ = 268990093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 268990297 and 268990306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268990549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134495174 + 134495175.

It is an arithmetic number, because the mean of its divisors is an integer number (134495175).

Almost surely, 2^268990349 is an apocalyptic number.

It is an amenable number.

268990349 is a deficient number, since it is larger than the sum of its proper divisors (1).

268990349 is an equidigital number, since it uses as much as digits as its factorization.

268990349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 50.

The square root of 268990349 is about 16400.9252482901. The cubic root of 268990349 is about 645.5237610210.

The spelling of 268990349 in words is "two hundred sixty-eight million, nine hundred ninety thousand, three hundred forty-nine".