1022839 has 4 divisors (see below), whose sum is σ = 1083024. Its totient is φ = 962656.

The previous prime is 1022837. The next prime is 1022843. The reversal of 1022839 is 9382201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9382201 = 37 ⋅253573.

It is a cyclic number.

It is not a de Polignac number, because 1022839 - 2¹ = 1022837 is a prime.

It is a Duffinian number.

1022839 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30067 + ... + 30100.

It is an arithmetic number, because the mean of its divisors is an integer number (270756).

2^1022839 is an apocalyptic number.

1022839 is a deficient number, since it is larger than the sum of its proper divisors (60185).

1022839 is an equidigital number, since it uses as much as digits as its factorization.

1022839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60184.

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

The square root of 1022839 is about 1011.3550316284. The cubic root of 1022839 is about 100.7555766606.

The spelling of 1022839 in words is "one million, twenty-two thousand, eight hundred thirty-nine".