268486489 has 2 divisors, whose sum is σ = 268486490. Its totient is φ = 268486488.

The previous prime is 268486483. The next prime is 268486501. The reversal of 268486489 is 984684862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216531225 + 51955264 = 14715^2 + 7208^2 .

It is a cyclic number.

It is not a de Polignac number, because 268486489 - 2¹⁵ = 268453721 is a prime.

It is not a weakly prime, because it can be changed into another prime (268486483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134243244 + 134243245.

It is an arithmetic number, because the mean of its divisors is an integer number (134243245).

Almost surely, 2^268486489 is an apocalyptic number.

It is an amenable number.

268486489 is a deficient number, since it is larger than the sum of its proper divisors (1).

268486489 is an equidigital number, since it uses as much as digits as its factorization.

268486489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5308416, while the sum is 55.

The square root of 268486489 is about 16385.5573295509. The cubic root of 268486489 is about 645.1204542379.

The spelling of 268486489 in words is "two hundred sixty-eight million, four hundred eighty-six thousand, four hundred eighty-nine".