11306809 has 2 divisors, whose sum is σ = 11306810. Its totient is φ = 11306808.

The previous prime is 11306803. The next prime is 11306873. The reversal of 11306809 is 90860311.

It is a happy number.

11306809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9859600 + 1447209 = 3140^2 + 1203^2 .

It is an emirp because it is prime and its reverse (90860311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11306809 - 2⁷ = 11306681 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11306803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5653404 + 5653405.

It is an arithmetic number, because the mean of its divisors is an integer number (5653405).

Almost surely, 2^11306809 is an apocalyptic number.

It is an amenable number.

11306809 is a deficient number, since it is larger than the sum of its proper divisors (1).

11306809 is an equidigital number, since it uses as much as digits as its factorization.

11306809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 11306809 is about 3362.5598879425. The cubic root of 11306809 is about 224.4467659158.

The spelling of 11306809 in words is "eleven million, three hundred six thousand, eight hundred nine".