2111839 has 2 divisors, whose sum is σ = 2111840. Its totient is φ = 2111838.

The previous prime is 2111819. The next prime is 2111843. The reversal of 2111839 is 9381112.

2111839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2111839 - 2¹¹ = 2109791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055919 + 1055920.

It is an arithmetic number, because the mean of its divisors is an integer number (1055920).

2^2111839 is an apocalyptic number.

2111839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111839 is an equidigital number, since it uses as much as digits as its factorization.

2111839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 25.

The square root of 2111839 is about 1453.2167766717. The cubic root of 2111839 is about 128.2981129337.

The spelling of 2111839 in words is "two million, one hundred eleven thousand, eight hundred thirty-nine".