33041989 has 4 divisors (see below), whose sum is σ = 33180480. Its totient is φ = 32903500.

The previous prime is 33041951. The next prime is 33042011. The reversal of 33041989 is 98914033.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98914033 = 563 ⋅175691.

It is a cyclic number.

It is not a de Polignac number, because 33041989 - 2¹³ = 33033797 is a prime.

It is a super-2 number, since 2×33041989² = 2183546074152242, 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 (33041929) 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 in 3 ways as a sum of consecutive naturals, for example, 68887 + ... + 69364.

It is an arithmetic number, because the mean of its divisors is an integer number (8295120).

Almost surely, 2^33041989 is an apocalyptic number.

It is an amenable number.

33041989 is a deficient number, since it is larger than the sum of its proper divisors (138491).

33041989 is a wasteful number, since it uses less digits than its factorization.

33041989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138490.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 33041989 is about 5748.2161580790. The cubic root of 33041989 is about 320.8894169156.

The spelling of 33041989 in words is "thirty-three million, forty-one thousand, nine hundred eighty-nine".