2789009 has 4 divisors (see below), whose sum is σ = 2830704. Its totient is φ = 2747316.

The previous prime is 2788997. The next prime is 2789011. The reversal of 2789009 is 9009872.

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 2789009 - 2¹² = 2784913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2789009.

It is not an unprimeable number, because it can be changed into a prime (2789069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20747 + ... + 20880.

It is an arithmetic number, because the mean of its divisors is an integer number (707676).

2^2789009 is an apocalyptic number.

It is an amenable number.

2789009 is a deficient number, since it is larger than the sum of its proper divisors (41695).

2789009 is an equidigital number, since it uses as much as digits as its factorization.

2789009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41694.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 2789009 is about 1670.0326344117. The cubic root of 2789009 is about 140.7613117114.

The spelling of 2789009 in words is "two million, seven hundred eighty-nine thousand, nine".