2102839 has 2 divisors, whose sum is σ = 2102840. Its totient is φ = 2102838.

The previous prime is 2102831. The next prime is 2102851. The reversal of 2102839 is 9382012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2102839 - 2³ = 2102831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051419 + 1051420.

It is an arithmetic number, because the mean of its divisors is an integer number (1051420).

2^2102839 is an apocalyptic number.

2102839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102839 is an equidigital number, since it uses as much as digits as its factorization.

2102839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2102839 is about 1450.1168918401. The cubic root of 2102839 is about 128.1155978823.

The spelling of 2102839 in words is "two million, one hundred two thousand, eight hundred thirty-nine".