2783289 has 4 divisors (see below), whose sum is σ = 3711056. Its totient is φ = 1855524.

The previous prime is 2783281. The next prime is 2783311. The reversal of 2783289 is 9823872.

2783289 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2783289 - 2³ = 2783281 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 (2783281) 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, 463879 + ... + 463884.

It is an arithmetic number, because the mean of its divisors is an integer number (927764).

2^2783289 is an apocalyptic number.

It is an amenable number.

2783289 is a deficient number, since it is larger than the sum of its proper divisors (927767).

2783289 is an equidigital number, since it uses as much as digits as its factorization.

2783289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927766.

The product of its digits is 48384, while the sum is 39.

The square root of 2783289 is about 1668.3192140595. The cubic root of 2783289 is about 140.6650163649.

The spelling of 2783289 in words is "two million, seven hundred eighty-three thousand, two hundred eighty-nine".