20050439 has 2 divisors, whose sum is σ = 20050440. Its totient is φ = 20050438.

The previous prime is 20050403. The next prime is 20050451. The reversal of 20050439 is 93405002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20050439 - 2⁸ = 20050183 is a prime.

It is a Chen prime.

It is equal to p_1273631 and since 20050439 and 1273631 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 (20050469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10025219 + 10025220.

It is an arithmetic number, because the mean of its divisors is an integer number (10025220).

Almost surely, 2^20050439 is an apocalyptic number.

20050439 is a deficient number, since it is larger than the sum of its proper divisors (1).

20050439 is an equidigital number, since it uses as much as digits as its factorization.

20050439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 20050439 is about 4477.7716556341. The cubic root of 20050439 is about 271.6697576189.

The spelling of 20050439 in words is "twenty million, fifty thousand, four hundred thirty-nine".