33808109 has 2 divisors, whose sum is σ = 33808110. Its totient is φ = 33808108.

The previous prime is 33808081. The next prime is 33808147. The reversal of 33808109 is 90180833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31696900 + 2111209 = 5630^2 + 1453^2 .

It is a cyclic number.

It is not a de Polignac number, because 33808109 - 2¹² = 33804013 is a prime.

It is a super-2 number, since 2×33808109² = 2285976468311762, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33808199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16904054 + 16904055.

It is an arithmetic number, because the mean of its divisors is an integer number (16904055).

Almost surely, 2^33808109 is an apocalyptic number.

It is an amenable number.

33808109 is a deficient number, since it is larger than the sum of its proper divisors (1).

33808109 is an equidigital number, since it uses as much as digits as its factorization.

33808109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 33808109 is about 5814.4740948774. The cubic root of 33808109 is about 323.3505668593.

The spelling of 33808109 in words is "thirty-three million, eight hundred eight thousand, one hundred nine".