2045839 has 2 divisors, whose sum is σ = 2045840. Its totient is φ = 2045838.

The previous prime is 2045837. The next prime is 2045851. The reversal of 2045839 is 9385402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2045839 - 2¹ = 2045837 is a prime.

Together with 2045837, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2045839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2045833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022919 + 1022920.

It is an arithmetic number, because the mean of its divisors is an integer number (1022920).

2^2045839 is an apocalyptic number.

2045839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2045839 is an equidigital number, since it uses as much as digits as its factorization.

2045839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2045839 is about 1430.3282839964. The cubic root of 2045839 is about 126.9474021141.

The spelling of 2045839 in words is "two million, forty-five thousand, eight hundred thirty-nine".