33085809 has 6 divisors (see below), whose sum is σ = 47790626. Its totient is φ = 22057200.

The previous prime is 33085747. The next prime is 33085817. The reversal of 33085809 is 90858033.

It can be written as a sum of positive squares in only one way, i.e., 30835809 + 2250000 = 5553^2 + 1500^2 .

It is not a de Polignac number, because 33085809 - 2²³ = 24697201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (33085849) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1838092 + ... + 1838109.

Almost surely, 2^33085809 is an apocalyptic number.

It is an amenable number.

33085809 is a deficient number, since it is larger than the sum of its proper divisors (14704817).

33085809 is a wasteful number, since it uses less digits than its factorization.

33085809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3676207 (or 3676204 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 33085809 is about 5752.0265124563. The cubic root of 33085809 is about 321.0312078431.

The spelling of 33085809 in words is "thirty-three million, eighty-five thousand, eight hundred nine".