2219839 has 2 divisors, whose sum is σ = 2219840. Its totient is φ = 2219838.

The previous prime is 2219831. The next prime is 2219849. The reversal of 2219839 is 9389122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2219839 - 2³ = 2219831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2219831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109919 + 1109920.

It is an arithmetic number, because the mean of its divisors is an integer number (1109920).

2^2219839 is an apocalyptic number.

2219839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2219839 is an equidigital number, since it uses as much as digits as its factorization.

2219839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 34.

The square root of 2219839 is about 1489.9124135331. The cubic root of 2219839 is about 130.4489213546.

The spelling of 2219839 in words is "two million, two hundred nineteen thousand, eight hundred thirty-nine".