33399939 has 8 divisors (see below), whose sum is σ = 45480960. Its totient is φ = 21792776.

The previous prime is 33399923. The next prime is 33399983. The reversal of 33399939 is 93999333.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33399939 - 2⁴ = 33399923 is a prime.

It is a super-2 number, since 2×33399939² = 2231111850407442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33399139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118299 + ... + 118580.

It is an arithmetic number, because the mean of its divisors is an integer number (5685120).

Almost surely, 2^33399939 is an apocalyptic number.

33399939 is a deficient number, since it is larger than the sum of its proper divisors (12081021).

33399939 is a wasteful number, since it uses less digits than its factorization.

33399939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236929.

The product of its digits is 531441, while the sum is 48.

The square root of 33399939 is about 5779.2680332374. The cubic root of 33399939 is about 322.0440091334.

The spelling of 33399939 in words is "thirty-three million, three hundred ninety-nine thousand, nine hundred thirty-nine".