268493839 has 2 divisors, whose sum is σ = 268493840. Its totient is φ = 268493838.

The previous prime is 268493809. The next prime is 268493843. The reversal of 268493839 is 938394862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268493839 - 2¹¹ = 268491791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268493809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134246919 + 134246920.

It is an arithmetic number, because the mean of its divisors is an integer number (134246920).

Almost surely, 2^268493839 is an apocalyptic number.

268493839 is a deficient number, since it is larger than the sum of its proper divisors (1).

268493839 is an equidigital number, since it uses as much as digits as its factorization.

268493839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 52.

The square root of 268493839 is about 16385.7816108967. The cubic root of 268493839 is about 645.1263410543.

The spelling of 268493839 in words is "two hundred sixty-eight million, four hundred ninety-three thousand, eight hundred thirty-nine".