2205839 has 2 divisors, whose sum is σ = 2205840. Its totient is φ = 2205838.

The previous prime is 2205823. The next prime is 2205883. The reversal of 2205839 is 9385022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2205839 - 2⁴ = 2205823 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2205139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1102919 + 1102920.

It is an arithmetic number, because the mean of its divisors is an integer number (1102920).

2^2205839 is an apocalyptic number.

2205839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2205839 is an equidigital number, since it uses as much as digits as its factorization.

2205839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 2205839 is about 1485.2067196185. The cubic root of 2205839 is about 130.1741059703.

The spelling of 2205839 in words is "two million, two hundred five thousand, eight hundred thirty-nine".