2789691 has 4 divisors (see below), whose sum is σ = 3719592. Its totient is φ = 1859792.

The previous prime is 2789669. The next prime is 2789701. The reversal of 2789691 is 1969872.

2789691 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 a cyclic number.

It is not a de Polignac number, because 2789691 - 2⁶ = 2789627 is a prime.

It is a D-number.

2789691 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2789621) 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, 464946 + ... + 464951.

It is an arithmetic number, because the mean of its divisors is an integer number (929898).

2^2789691 is an apocalyptic number.

2789691 is a deficient number, since it is larger than the sum of its proper divisors (929901).

2789691 is an equidigital number, since it uses as much as digits as its factorization.

2789691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929900.

The product of its digits is 54432, while the sum is 42.

The square root of 2789691 is about 1670.2368095573. The cubic root of 2789691 is about 140.7727842918.

The spelling of 2789691 in words is "two million, seven hundred eighty-nine thousand, six hundred ninety-one".