33149933 has 2 divisors, whose sum is σ = 33149934. Its totient is φ = 33149932.

The previous prime is 33149887. The next prime is 33149953. The reversal of 33149933 is 33994133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24780484 + 8369449 = 4978^2 + 2893^2 .

It is an emirp because it is prime and its reverse (33994133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33149933 - 2⁶ = 33149869 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33149893 and 33149902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33149953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16574966 + 16574967.

It is an arithmetic number, because the mean of its divisors is an integer number (16574967).

Almost surely, 2^33149933 is an apocalyptic number.

It is an amenable number.

33149933 is a deficient number, since it is larger than the sum of its proper divisors (1).

33149933 is an equidigital number, since it uses as much as digits as its factorization.

33149933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26244, while the sum is 35.

The square root of 33149933 is about 5757.5978497981. The cubic root of 33149933 is about 321.2384721345.

The spelling of 33149933 in words is "thirty-three million, one hundred forty-nine thousand, nine hundred thirty-three".