33981109 has 8 divisors (see below), whose sum is σ = 35212320. Its totient is φ = 32771856.

The previous prime is 33981107. The next prime is 33981131. The reversal of 33981109 is 90118933.

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 33981109 - 2¹ = 33981107 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 (33981107) 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, 2307 + ... + 8560.

It is an arithmetic number, because the mean of its divisors is an integer number (4401540).

Almost surely, 2^33981109 is an apocalyptic number.

It is an amenable number.

33981109 is a deficient number, since it is larger than the sum of its proper divisors (1231211).

33981109 is a wasteful number, since it uses less digits than its factorization.

33981109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10979.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 33981109 is about 5829.3317798870. The cubic root of 33981109 is about 323.9011694958.

The spelling of 33981109 in words is "thirty-three million, nine hundred eighty-one thousand, one hundred nine".