268490429 has 2 divisors, whose sum is σ = 268490430. Its totient is φ = 268490428.

The previous prime is 268490413. The next prime is 268490447. The reversal of 268490429 is 924094862.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 266016100 + 2474329 = 16310^2 + 1573^2 .

It is a cyclic number.

It is not a de Polignac number, because 268490429 - 2⁴ = 268490413 is a prime.

It is a super-2 number, since 2×268490429² = 144174220929208082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 268490429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268490029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134245214 + 134245215.

It is an arithmetic number, because the mean of its divisors is an integer number (134245215).

Almost surely, 2^268490429 is an apocalyptic number.

It is an amenable number.

268490429 is a deficient number, since it is larger than the sum of its proper divisors (1).

268490429 is an equidigital number, since it uses as much as digits as its factorization.

268490429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 268490429 is about 16385.6775569398. The cubic root of 268490429 is about 645.1236099052.

The spelling of 268490429 in words is "two hundred sixty-eight million, four hundred ninety thousand, four hundred twenty-nine".