264947009 has 2 divisors, whose sum is σ = 264947010. Its totient is φ = 264947008.

The previous prime is 264946991. The next prime is 264947017. The reversal of 264947009 is 900749462.

264947009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238393600 + 26553409 = 15440^2 + 5153^2 .

It is a cyclic number.

It is not a de Polignac number, because 264947009 - 2⁸ = 264946753 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (264946009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132473504 + 132473505.

It is an arithmetic number, because the mean of its divisors is an integer number (132473505).

Almost surely, 2^264947009 is an apocalyptic number.

It is an amenable number.

264947009 is a deficient number, since it is larger than the sum of its proper divisors (1).

264947009 is an equidigital number, since it uses as much as digits as its factorization.

264947009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 264947009 is about 16277.1929090983. The cubic root of 264947009 is about 642.2730122184.

The spelling of 264947009 in words is "two hundred sixty-four million, nine hundred forty-seven thousand, nine".