33749789 has 2 divisors, whose sum is σ = 33749790. Its totient is φ = 33749788.

The previous prime is 33749783. The next prime is 33749801. The reversal of 33749789 is 98794733.

33749789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29268100 + 4481689 = 5410^2 + 2117^2 .

It is a cyclic number.

It is not a de Polignac number, because 33749789 - 2⁴ = 33749773 is a prime.

It is a super-2 number, since 2×33749789² = 2278096515089042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33749783) 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 as a sum of consecutive naturals, namely, 16874894 + 16874895.

It is an arithmetic number, because the mean of its divisors is an integer number (16874895).

Almost surely, 2^33749789 is an apocalyptic number.

It is an amenable number.

33749789 is a deficient number, since it is larger than the sum of its proper divisors (1).

33749789 is an equidigital number, since it uses as much as digits as its factorization.

33749789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 50.

The square root of 33749789 is about 5809.4568592942. The cubic root of 33749789 is about 323.1645300431.

The spelling of 33749789 in words is "thirty-three million, seven hundred forty-nine thousand, seven hundred eighty-nine".