266945479 has 2 divisors, whose sum is σ = 266945480. Its totient is φ = 266945478.

The previous prime is 266945467. The next prime is 266945507. The reversal of 266945479 is 974549662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266945479 - 2⁷ = 266945351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266945279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133472739 + 133472740.

It is an arithmetic number, because the mean of its divisors is an integer number (133472740).

Almost surely, 2^266945479 is an apocalyptic number.

266945479 is a deficient number, since it is larger than the sum of its proper divisors (1).

266945479 is an equidigital number, since it uses as much as digits as its factorization.

266945479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 52.

The square root of 266945479 is about 16338.4662376858. The cubic root of 266945479 is about 643.8838368918.

The spelling of 266945479 in words is "two hundred sixty-six million, nine hundred forty-five thousand, four hundred seventy-nine".