268979 has 2 divisors, whose sum is σ = 268980. Its totient is φ = 268978.

The previous prime is 268973. The next prime is 268993. The reversal of 268979 is 979862.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268979 is a prime.

It is not a weakly prime, because it can be changed into another prime (268973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134489 + 134490.

It is an arithmetic number, because the mean of its divisors is an integer number (134490).

2²⁶⁸⁹⁷⁹ is an apocalyptic number.

268979 is a deficient number, since it is larger than the sum of its proper divisors (1).

268979 is an equidigital number, since it uses as much as digits as its factorization.

268979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 268979 is about 518.6318540159. The cubic root of 268979 is about 64.5514682440.

The spelling of 268979 in words is "two hundred sixty-eight thousand, nine hundred seventy-nine".