20344039 has 2 divisors, whose sum is σ = 20344040. Its totient is φ = 20344038.

The previous prime is 20344033. The next prime is 20344057. The reversal of 20344039 is 93044302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20344039 - 2⁵ = 20344007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20344033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172019 + 10172020.

It is an arithmetic number, because the mean of its divisors is an integer number (10172020).

Almost surely, 2^20344039 is an apocalyptic number.

20344039 is a deficient number, since it is larger than the sum of its proper divisors (1).

20344039 is an equidigital number, since it uses as much as digits as its factorization.

20344039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 20344039 is about 4510.4366750903. The cubic root of 20344039 is about 272.9893639047.

The spelling of 20344039 in words is "twenty million, three hundred forty-four thousand, thirty-nine".