33664939 has 16 divisors (see below), whose sum is σ = 43799040. Its totient is φ = 25090560.

The previous prime is 33664937. The next prime is 33664951. The reversal of 33664939 is 93946633.

33664939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 33664939 - 2¹ = 33664937 is a prime.

It is a super-2 number, since 2×33664939² = 2266656235747442, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33664895 and 33664904.

It is not an unprimeable number, because it can be changed into a prime (33664933) 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 15 ways as a sum of consecutive naturals, for example, 7734 + ... + 11275.

It is an arithmetic number, because the mean of its divisors is an integer number (2737440).

Almost surely, 2^33664939 is an apocalyptic number.

33664939 is a deficient number, since it is larger than the sum of its proper divisors (10134101).

33664939 is a wasteful number, since it uses less digits than its factorization.

33664939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19050.

The product of its digits is 314928, while the sum is 43.

The square root of 33664939 is about 5802.1495154813. The cubic root of 33664939 is about 322.8934812203.

The spelling of 33664939 in words is "thirty-three million, six hundred sixty-four thousand, nine hundred thirty-nine".