33404139 has 12 divisors (see below), whose sum is σ = 48324016. Its totient is φ = 22235472.

The previous prime is 33404117. The next prime is 33404153. The reversal of 33404139 is 93140433.

It is not a de Polignac number, because 33404139 - 2⁷ = 33404011 is a prime.

It is a super-2 number, since 2×33404139² = 2231673004662642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33404159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4362 + ... + 9264.

Almost surely, 2^33404139 is an apocalyptic number.

33404139 is a deficient number, since it is larger than the sum of its proper divisors (14919877).

33404139 is a wasteful number, since it uses less digits than its factorization.

33404139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5666 (or 5663 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 33404139 is about 5779.6313896303. The cubic root of 33404139 is about 322.0575074430.

The spelling of 33404139 in words is "thirty-three million, four hundred four thousand, one hundred thirty-nine".