33884021 has 2 divisors, whose sum is σ = 33884022. Its totient is φ = 33884020.

The previous prime is 33884017. The next prime is 33884027. The reversal of 33884021 is 12048833.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22221796 + 11662225 = 4714^2 + 3415^2 .

It is a cyclic number.

It is not a de Polignac number, because 33884021 - 2² = 33884017 is a prime.

It is a super-2 number, since 2×33884021² = 2296253758256882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33884027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16942010 + 16942011.

It is an arithmetic number, because the mean of its divisors is an integer number (16942011).

Almost surely, 2^33884021 is an apocalyptic number.

It is an amenable number.

33884021 is a deficient number, since it is larger than the sum of its proper divisors (1).

33884021 is an equidigital number, since it uses as much as digits as its factorization.

33884021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 33884021 is about 5820.9982820819. The cubic root of 33884021 is about 323.5924007469.

The spelling of 33884021 in words is "thirty-three million, eight hundred eighty-four thousand, twenty-one".