33800209 has 4 divisors (see below), whose sum is σ = 33894720. Its totient is φ = 33705700.

The previous prime is 33800159. The next prime is 33800219. The reversal of 33800209 is 90200833.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90200833 = 5483 ⋅16451.

It is a cyclic number.

It is not a de Polignac number, because 33800209 - 2¹⁷ = 33669137 is a prime.

It is a super-2 number, since 2×33800209² = 2284908256887362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33800219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46717 + ... + 47434.

It is an arithmetic number, because the mean of its divisors is an integer number (8473680).

Almost surely, 2^33800209 is an apocalyptic number.

It is an amenable number.

33800209 is a deficient number, since it is larger than the sum of its proper divisors (94511).

33800209 is an equidigital number, since it uses as much as digits as its factorization.

33800209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94510.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 33800209 is about 5813.7947160181. The cubic root of 33800209 is about 323.3253789330.

The spelling of 33800209 in words is "thirty-three million, eight hundred thousand, two hundred nine".