268438459 has 2 divisors, whose sum is σ = 268438460. Its totient is φ = 268438458.

The previous prime is 268438399. The next prime is 268438493. The reversal of 268438459 is 954834862.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268438459 is a prime.

It is not a weakly prime, because it can be changed into another prime (268438559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134219229 + 134219230.

It is an arithmetic number, because the mean of its divisors is an integer number (134219230).

Almost surely, 2^268438459 is an apocalyptic number.

268438459 is a deficient number, since it is larger than the sum of its proper divisors (1).

268438459 is an equidigital number, since it uses as much as digits as its factorization.

268438459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1658880, while the sum is 49.

The square root of 268438459 is about 16384.0916440308. The cubic root of 268438459 is about 645.0819830490.

The spelling of 268438459 in words is "two hundred sixty-eight million, four hundred thirty-eight thousand, four hundred fifty-nine".