1133809 has 2 divisors, whose sum is σ = 1133810. Its totient is φ = 1133808.

The previous prime is 1133789. The next prime is 1133819. The reversal of 1133809 is 9083311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 950625 + 183184 = 975^2 + 428^2 .

It is a cyclic number.

It is not a de Polignac number, because 1133809 - 2⁵ = 1133777 is a prime.

It is not a weakly prime, because it can be changed into another prime (1133819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 566904 + 566905.

It is an arithmetic number, because the mean of its divisors is an integer number (566905).

2^1133809 is an apocalyptic number.

It is an amenable number.

1133809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1133809 is an equidigital number, since it uses as much as digits as its factorization.

1133809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1133809 is about 1064.8046769244. The cubic root of 1133809 is about 104.2749443345.

The spelling of 1133809 in words is "one million, one hundred thirty-three thousand, eight hundred nine".