268223939 has 2 divisors, whose sum is σ = 268223940. Its totient is φ = 268223938.

The previous prime is 268223933. The next prime is 268223947. The reversal of 268223939 is 939322862.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268223939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 268223939.

It is not a weakly prime, because it can be changed into another prime (268223933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134111969 + 134111970.

It is an arithmetic number, because the mean of its divisors is an integer number (134111970).

Almost surely, 2^268223939 is an apocalyptic number.

268223939 is a deficient number, since it is larger than the sum of its proper divisors (1).

268223939 is an equidigital number, since it uses as much as digits as its factorization.

268223939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 44.

The square root of 268223939 is about 16377.5437413551. The cubic root of 268223939 is about 644.9101002441.

The spelling of 268223939 in words is "two hundred sixty-eight million, two hundred twenty-three thousand, nine hundred thirty-nine".