11465809 has 2 divisors, whose sum is σ = 11465810. Its totient is φ = 11465808.

The previous prime is 11465789. The next prime is 11465813. The reversal of 11465809 is 90856411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10061584 + 1404225 = 3172^2 + 1185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11465809 is a prime.

It is not a weakly prime, because it can be changed into another prime (11465849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5732904 + 5732905.

It is an arithmetic number, because the mean of its divisors is an integer number (5732905).

Almost surely, 2^11465809 is an apocalyptic number.

It is an amenable number.

11465809 is a deficient number, since it is larger than the sum of its proper divisors (1).

11465809 is an equidigital number, since it uses as much as digits as its factorization.

11465809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 11465809 is about 3386.1200510319. The cubic root of 11465809 is about 225.4939534894.

The spelling of 11465809 in words is "eleven million, four hundred sixty-five thousand, eight hundred nine".