1136809 has 2 divisors, whose sum is σ = 1136810. Its totient is φ = 1136808.

The previous prime is 1136767. The next prime is 1136813. The reversal of 1136809 is 9086311.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 861184 + 275625 = 928^2 + 525^2 .

It is a cyclic number.

It is not a de Polignac number, because 1136809 - 2¹⁵ = 1104041 is a prime.

It is not a weakly prime, because it can be changed into another prime (1136819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 568404 + 568405.

It is an arithmetic number, because the mean of its divisors is an integer number (568405).

2^1136809 is an apocalyptic number.

It is an amenable number.

1136809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1136809 is an equidigital number, since it uses as much as digits as its factorization.

1136809 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1136809 is about 1066.2124553765. The cubic root of 1136809 is about 104.3668320428.

The spelling of 1136809 in words is "one million, one hundred thirty-six thousand, eight hundred nine".