33890033 has 2 divisors, whose sum is σ = 33890034. Its totient is φ = 33890032.

The previous prime is 33890029. The next prime is 33890117. The reversal of 33890033 is 33009833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28376929 + 5513104 = 5327^2 + 2348^2 .

It is a cyclic number.

It is not a de Polignac number, because 33890033 - 2² = 33890029 is a prime.

It is a super-2 number, since 2×33890033² = 2297068673482178, which contains 22 as substring.

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 = 33889978 and 33890005.

It is not a weakly prime, because it can be changed into another prime (33890833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16945016 + 16945017.

It is an arithmetic number, because the mean of its divisors is an integer number (16945017).

Almost surely, 2^33890033 is an apocalyptic number.

It is an amenable number.

33890033 is a deficient number, since it is larger than the sum of its proper divisors (1).

33890033 is an equidigital number, since it uses as much as digits as its factorization.

33890033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 33890033 is about 5821.5146654458. The cubic root of 33890033 is about 323.6115378151.

Adding to 33890033 its reverse (33009833), we get a palindrome (66899866).

The spelling of 33890033 in words is "thirty-three million, eight hundred ninety thousand, thirty-three".