1022889 has 16 divisors (see below), whose sum is σ = 1584128. Its totient is φ = 574992.

The previous prime is 1022881. The next prime is 1022891. The reversal of 1022889 is 9882201.

It is not a de Polignac number, because 1022889 - 2³ = 1022881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1022881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1044 + ... + 1770.

It is an arithmetic number, because the mean of its divisors is an integer number (99008).

2^1022889 is an apocalyptic number.

It is an amenable number.

1022889 is a deficient number, since it is larger than the sum of its proper divisors (561239).

1022889 is an equidigital number, since it uses as much as digits as its factorization.

1022889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 1022889 is about 1011.3797506377. The cubic root of 1022889 is about 100.7572183972.

The spelling of 1022889 in words is "one million, twenty-two thousand, eight hundred eighty-nine".