266345449 has 2 divisors, whose sum is σ = 266345450. Its totient is φ = 266345448.

The previous prime is 266345369. The next prime is 266345467. The reversal of 266345449 is 944543662.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265461849 + 883600 = 16293^2 + 940^2 .

It is a cyclic number.

It is not a de Polignac number, because 266345449 - 2⁹ = 266344937 is a prime.

It is not a weakly prime, because it can be changed into another prime (266348449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133172724 + 133172725.

It is an arithmetic number, because the mean of its divisors is an integer number (133172725).

Almost surely, 2^266345449 is an apocalyptic number.

It is an amenable number.

266345449 is a deficient number, since it is larger than the sum of its proper divisors (1).

266345449 is an equidigital number, since it uses as much as digits as its factorization.

266345449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 43.

The square root of 266345449 is about 16320.0934127229. The cubic root of 266345449 is about 643.4010423574.

The spelling of 266345449 in words is "two hundred sixty-six million, three hundred forty-five thousand, four hundred forty-nine".