2003839 has 2 divisors, whose sum is σ = 2003840. Its totient is φ = 2003838.

The previous prime is 2003819. The next prime is 2003857. The reversal of 2003839 is 9383002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2003839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2003819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001919 + 1001920.

It is an arithmetic number, because the mean of its divisors is an integer number (1001920).

2^2003839 is an apocalyptic number.

2003839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003839 is an equidigital number, since it uses as much as digits as its factorization.

2003839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 2003839 is about 1415.5702031337. The cubic root of 2003839 is about 126.0726674134.

The spelling of 2003839 in words is "two million, three thousand, eight hundred thirty-nine".