2789889 has 4 divisors (see below), whose sum is σ = 3719856. Its totient is φ = 1859924.

The previous prime is 2789881. The next prime is 2789893. The reversal of 2789889 is 9889872.

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 2789889 - 2³ = 2789881 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2789881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464979 + ... + 464984.

It is an arithmetic number, because the mean of its divisors is an integer number (929964).

2^2789889 is an apocalyptic number.

It is an amenable number.

2789889 is a deficient number, since it is larger than the sum of its proper divisors (929967).

2789889 is an equidigital number, since it uses as much as digits as its factorization.

2789889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929966.

The product of its digits is 580608, while the sum is 51.

The square root of 2789889 is about 1670.2960815376. The cubic root of 2789889 is about 140.7761146908.

The spelling of 2789889 in words is "two million, seven hundred eighty-nine thousand, eight hundred eighty-nine".