268559009 has 2 divisors, whose sum is σ = 268559010. Its totient is φ = 268559008.

The previous prime is 268558993. The next prime is 268559029. The reversal of 268559009 is 900955862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 256896784 + 11662225 = 16028^2 + 3415^2 .

It is a cyclic number.

It is not a de Polignac number, because 268559009 - 2⁴ = 268558993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (268559029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134279504 + 134279505.

It is an arithmetic number, because the mean of its divisors is an integer number (134279505).

Almost surely, 2^268559009 is an apocalyptic number.

It is an amenable number.

268559009 is a deficient number, since it is larger than the sum of its proper divisors (1).

268559009 is an equidigital number, since it uses as much as digits as its factorization.

268559009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 268559009 is about 16387.7701045627. The cubic root of 268559009 is about 645.1785327951.

The spelling of 268559009 in words is "two hundred sixty-eight million, five hundred fifty-nine thousand, nine".