20220839 has 2 divisors, whose sum is σ = 20220840. Its totient is φ = 20220838.

The previous prime is 20220821. The next prime is 20220869. The reversal of 20220839 is 93802202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20220839 - 2⁸ = 20220583 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20220869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110419 + 10110420.

It is an arithmetic number, because the mean of its divisors is an integer number (10110420).

Almost surely, 2^20220839 is an apocalyptic number.

20220839 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220839 is an equidigital number, since it uses as much as digits as its factorization.

20220839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 20220839 is about 4496.7587215682. The cubic root of 20220839 is about 272.4371889011.

The spelling of 20220839 in words is "twenty million, two hundred twenty thousand, eight hundred thirty-nine".