33749189 has 4 divisors (see below), whose sum is σ = 33794880. Its totient is φ = 33703500.

The previous prime is 33749179. The next prime is 33749201. The reversal of 33749189 is 98194733.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33749189 - 2⁸ = 33748933 is a prime.

It is a super-2 number, since 2×33749189² = 2278015516315442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33749129) 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 in 3 ways as a sum of consecutive naturals, for example, 21719 + ... + 23220.

It is an arithmetic number, because the mean of its divisors is an integer number (8448720).

Almost surely, 2^33749189 is an apocalyptic number.

It is an amenable number.

33749189 is a deficient number, since it is larger than the sum of its proper divisors (45691).

33749189 is an equidigital number, since it uses as much as digits as its factorization.

33749189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45690.

The product of its digits is 163296, while the sum is 44.

The square root of 33749189 is about 5809.4052191253. The cubic root of 33749189 is about 323.1626149707.

The spelling of 33749189 in words is "thirty-three million, seven hundred forty-nine thousand, one hundred eighty-nine".