266234447 has 2 divisors, whose sum is σ = 266234448. Its totient is φ = 266234446.

The previous prime is 266234393. The next prime is 266234473. The reversal of 266234447 is 744432662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 266234447 - 2⁸ = 266234191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 266234447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266234497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133117223 + 133117224.

It is an arithmetic number, because the mean of its divisors is an integer number (133117224).

Almost surely, 2^266234447 is an apocalyptic number.

266234447 is a deficient number, since it is larger than the sum of its proper divisors (1).

266234447 is an equidigital number, since it uses as much as digits as its factorization.

266234447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 38.

The square root of 266234447 is about 16316.6922812193. The cubic root of 266234447 is about 643.3116487690.

The spelling of 266234447 in words is "two hundred sixty-six million, two hundred thirty-four thousand, four hundred forty-seven".