268747889 has 2 divisors, whose sum is σ = 268747890. Its totient is φ = 268747888.

The previous prime is 268747879. The next prime is 268747931. The reversal of 268747889 is 988747862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212197489 + 56550400 = 14567^2 + 7520^2 .

It is a cyclic number.

It is not a de Polignac number, because 268747889 - 2²⁴ = 251970673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (268747819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134373944 + 134373945.

It is an arithmetic number, because the mean of its divisors is an integer number (134373945).

Almost surely, 2^268747889 is an apocalyptic number.

It is an amenable number.

268747889 is a deficient number, since it is larger than the sum of its proper divisors (1).

268747889 is an equidigital number, since it uses as much as digits as its factorization.

268747889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10838016, while the sum is 59.

The square root of 268747889 is about 16393.5319257322. The cubic root of 268747889 is about 645.3297506648.

The spelling of 268747889 in words is "two hundred sixty-eight million, seven hundred forty-seven thousand, eight hundred eighty-nine".