33981949 has 8 divisors (see below), whose sum is σ = 34784640. Its totient is φ = 33188400.

The previous prime is 33981919. The next prime is 33981953. The reversal of 33981949 is 94918933.

33981949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 33981949 - 2⁵ = 33981917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33981899 and 33981908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33981919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5544 + ... + 9934.

It is an arithmetic number, because the mean of its divisors is an integer number (4348080).

Almost surely, 2^33981949 is an apocalyptic number.

It is an amenable number.

33981949 is a deficient number, since it is larger than the sum of its proper divisors (802691).

33981949 is a wasteful number, since it uses less digits than its factorization.

33981949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4571.

The product of its digits is 209952, while the sum is 46.

The square root of 33981949 is about 5829.4038288662. The cubic root of 33981949 is about 323.9038383781.

The spelling of 33981949 in words is "thirty-three million, nine hundred eighty-one thousand, nine hundred forty-nine".