1842839 has 2 divisors, whose sum is σ = 1842840. Its totient is φ = 1842838.

The previous prime is 1842811. The next prime is 1842847. The reversal of 1842839 is 9382481.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1842839 - 2⁸ = 1842583 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1842799 and 1842808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1842809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 921419 + 921420.

It is an arithmetic number, because the mean of its divisors is an integer number (921420).

2^1842839 is an apocalyptic number.

1842839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1842839 is an equidigital number, since it uses as much as digits as its factorization.

1842839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 35.

The square root of 1842839 is about 1357.5120625615. The cubic root of 1842839 is about 122.6015040971.

The spelling of 1842839 in words is "one million, eight hundred forty-two thousand, eight hundred thirty-nine".