33159409 has 4 divisors (see below), whose sum is σ = 33176304. Its totient is φ = 33142516.

The previous prime is 33159391. The next prime is 33159421. The reversal of 33159409 is 90495133.

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 33159409 - 2⁷ = 33159281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33159109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5047 + ... + 9580.

It is an arithmetic number, because the mean of its divisors is an integer number (8294076).

Almost surely, 2^33159409 is an apocalyptic number.

It is an amenable number.

33159409 is a deficient number, since it is larger than the sum of its proper divisors (16895).

33159409 is a wasteful number, since it uses less digits than its factorization.

33159409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16894.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 33159409 is about 5758.4207036305. The cubic root of 33159409 is about 321.2690781869.

The spelling of 33159409 in words is "thirty-three million, one hundred fifty-nine thousand, four hundred nine".