2609789 has 24 divisors (see below), whose sum is σ = 3476088. Its totient is φ = 1935360.

The previous prime is 2609777. The next prime is 2609791. The reversal of 2609789 is 9879062.

It can be written as a sum of positive squares in 4 ways, for example, as 550564 + 2059225 = 742^2 + 1435^2 .

It is not a de Polignac number, because 2609789 - 2⁸ = 2609533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2609489) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10709 + ... + 10949.

It is an arithmetic number, because the mean of its divisors is an integer number (144837).

2^2609789 is an apocalyptic number.

It is an amenable number.

2609789 is a deficient number, since it is larger than the sum of its proper divisors (866299).

2609789 is a wasteful number, since it uses less digits than its factorization.

2609789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 2609789 is about 1615.4841379599. The cubic root of 2609789 is about 137.6792417253.

The spelling of 2609789 in words is "two million, six hundred nine thousand, seven hundred eighty-nine".