33945109 has 8 divisors (see below), whose sum is σ = 38308320. Its totient is φ = 29794800.

The previous prime is 33945083. The next prime is 33945133. The reversal of 33945109 is 90154933.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33945109 - 2²¹ = 31847957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33945199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52887 + ... + 53524.

It is an arithmetic number, because the mean of its divisors is an integer number (4788540).

Almost surely, 2^33945109 is an apocalyptic number.

It is an amenable number.

33945109 is a deficient number, since it is larger than the sum of its proper divisors (4363211).

33945109 is a wasteful number, since it uses less digits than its factorization.

33945109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106451.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 33945109 is about 5826.2431291528. The cubic root of 33945109 is about 323.7867474674.

The spelling of 33945109 in words is "thirty-three million, nine hundred forty-five thousand, one hundred nine".