2789859 has 4 divisors (see below), whose sum is σ = 3719816. Its totient is φ = 1859904.

The previous prime is 2789849. The next prime is 2789861. The reversal of 2789859 is 9589872.

It is a happy number.

2789859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2789859 - 2¹² = 2785763 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2789849) 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, 464974 + ... + 464979.

It is an arithmetic number, because the mean of its divisors is an integer number (929954).

2^2789859 is an apocalyptic number.

2789859 is a deficient number, since it is larger than the sum of its proper divisors (929957).

2789859 is an equidigital number, since it uses as much as digits as its factorization.

2789859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929956.

The product of its digits is 362880, while the sum is 48.

The square root of 2789859 is about 1670.2871010698. The cubic root of 2789859 is about 140.7756100950.

The spelling of 2789859 in words is "two million, seven hundred eighty-nine thousand, eight hundred fifty-nine".