268438559 has 2 divisors, whose sum is σ = 268438560. Its totient is φ = 268438558.

The previous prime is 268438553. The next prime is 268438571. The reversal of 268438559 is 955834862.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268438559 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268438553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134219279 + 134219280.

It is an arithmetic number, because the mean of its divisors is an integer number (134219280).

Almost surely, 2^268438559 is an apocalyptic number.

268438559 is a deficient number, since it is larger than the sum of its proper divisors (1).

268438559 is an equidigital number, since it uses as much as digits as its factorization.

268438559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2073600, while the sum is 50.

The square root of 268438559 is about 16384.0946957713. The cubic root of 268438559 is about 645.0820631520.

The spelling of 268438559 in words is "two hundred sixty-eight million, four hundred thirty-eight thousand, five hundred fifty-nine".