20334439 has 2 divisors, whose sum is σ = 20334440. Its totient is φ = 20334438.

The previous prime is 20334437. The next prime is 20334451. The reversal of 20334439 is 93443302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20334439 - 2¹ = 20334437 is a prime.

Together with 20334437, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_1290448 and since 20334439 and 1290448 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20334437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10167219 + 10167220.

It is an arithmetic number, because the mean of its divisors is an integer number (10167220).

Almost surely, 2^20334439 is an apocalyptic number.

20334439 is a deficient number, since it is larger than the sum of its proper divisors (1).

20334439 is an equidigital number, since it uses as much as digits as its factorization.

20334439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 20334439 is about 4509.3723510041. The cubic root of 20334439 is about 272.9464174963.

The spelling of 20334439 in words is "twenty million, three hundred thirty-four thousand, four hundred thirty-nine".