1822889 has 4 divisors (see below), whose sum is σ = 1828224. Its totient is φ = 1817556.

The previous prime is 1822871. The next prime is 1822903. The reversal of 1822889 is 9882281.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1822889 - 2⁸ = 1822633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1822189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2117 + ... + 2850.

It is an arithmetic number, because the mean of its divisors is an integer number (457056).

2^1822889 is an apocalyptic number.

It is an amenable number.

1822889 is a deficient number, since it is larger than the sum of its proper divisors (5335).

1822889 is an equidigital number, since it uses as much as digits as its factorization.

1822889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5334.

The product of its digits is 18432, while the sum is 38.

The square root of 1822889 is about 1350.1440663870. The cubic root of 1822889 is about 122.1574827331.

The spelling of 1822889 in words is "one million, eight hundred twenty-two thousand, eight hundred eighty-nine".