20004339 has 4 divisors (see below), whose sum is σ = 26672456. Its totient is φ = 13336224.

The previous prime is 20004323. The next prime is 20004343. The reversal of 20004339 is 93340002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20004339 - 2⁴ = 20004323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20004139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3334054 + ... + 3334059.

It is an arithmetic number, because the mean of its divisors is an integer number (6668114).

Almost surely, 2^20004339 is an apocalyptic number.

20004339 is a deficient number, since it is larger than the sum of its proper divisors (6668117).

20004339 is an equidigital number, since it uses as much as digits as its factorization.

20004339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6668116.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 20004339 is about 4472.6210436387. The cubic root of 20004339 is about 271.4613900035.

The spelling of 20004339 in words is "twenty million, four thousand, three hundred thirty-nine".