266452489 has 2 divisors, whose sum is σ = 266452490. Its totient is φ = 266452488.

The previous prime is 266452469. The next prime is 266452507. The reversal of 266452489 is 984254662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136492489 + 129960000 = 11683^2 + 11400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266452489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (266452469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133226244 + 133226245.

It is an arithmetic number, because the mean of its divisors is an integer number (133226245).

Almost surely, 2^266452489 is an apocalyptic number.

It is an amenable number.

266452489 is a deficient number, since it is larger than the sum of its proper divisors (1).

266452489 is an equidigital number, since it uses as much as digits as its factorization.

266452489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 829440, while the sum is 46.

The square root of 266452489 is about 16323.3724762991. The cubic root of 266452489 is about 643.4872216958.

The spelling of 266452489 in words is "two hundred sixty-six million, four hundred fifty-two thousand, four hundred eighty-nine".