2005889 has 4 divisors (see below), whose sum is σ = 2031360. Its totient is φ = 1980420.

The previous prime is 2005879. The next prime is 2005903. The reversal of 2005889 is 9885002.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9885002 = 2 ⋅4942501.

It is a cyclic number.

It is not a de Polignac number, because 2005889 - 2⁴ = 2005873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2005859) 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, 12617 + ... + 12774.

It is an arithmetic number, because the mean of its divisors is an integer number (507840).

2^2005889 is an apocalyptic number.

It is an amenable number.

2005889 is a deficient number, since it is larger than the sum of its proper divisors (25471).

2005889 is an equidigital number, since it uses as much as digits as its factorization.

2005889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25470.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 2005889 is about 1416.2941078745. The cubic root of 2005889 is about 126.1156450652.

The spelling of 2005889 in words is "two million, five thousand, eight hundred eighty-nine".