264953209 has 2 divisors, whose sum is σ = 264953210. Its totient is φ = 264953208.

The previous prime is 264953191. The next prime is 264953239. The reversal of 264953209 is 902359462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229431609 + 35521600 = 15147^2 + 5960^2 .

It is a cyclic number.

It is not a de Polignac number, because 264953209 - 2¹⁵ = 264920441 is a prime.

It is not a weakly prime, because it can be changed into another prime (264953239) 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, 132476604 + 132476605.

It is an arithmetic number, because the mean of its divisors is an integer number (132476605).

Almost surely, 2^264953209 is an apocalyptic number.

It is an amenable number.

264953209 is a deficient number, since it is larger than the sum of its proper divisors (1).

264953209 is an equidigital number, since it uses as much as digits as its factorization.

264953209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 264953209 is about 16277.3833585131. The cubic root of 264953209 is about 642.2780221027.

The spelling of 264953209 in words is "two hundred sixty-four million, nine hundred fifty-three thousand, two hundred nine".