268087979 has 2 divisors, whose sum is σ = 268087980. Its totient is φ = 268087978.

The previous prime is 268087957. The next prime is 268087987. The reversal of 268087979 is 979780862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268087979 - 2⁸ = 268087723 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (268087279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134043989 + 134043990.

It is an arithmetic number, because the mean of its divisors is an integer number (134043990).

Almost surely, 2^268087979 is an apocalyptic number.

268087979 is a deficient number, since it is larger than the sum of its proper divisors (1).

268087979 is an equidigital number, since it uses as much as digits as its factorization.

268087979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 56.

The square root of 268087979 is about 16373.3924096383. The cubic root of 268087979 is about 644.8011156934.

The spelling of 268087979 in words is "two hundred sixty-eight million, eighty-seven thousand, nine hundred seventy-nine".