2740789 has 4 divisors (see below), whose sum is σ = 2792556. Its totient is φ = 2689024.

The previous prime is 2740763. The next prime is 2740799. The reversal of 2740789 is 9870472.

It is a happy number.

2740789 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 can be written as a sum of positive squares in 2 ways, for example, as 1912689 + 828100 = 1383^2 + 910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2740789 is a prime.

It is a Duffinian number.

2740789 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2740739) 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, 25804 + ... + 25909.

It is an arithmetic number, because the mean of its divisors is an integer number (698139).

2^2740789 is an apocalyptic number.

It is an amenable number.

2740789 is a deficient number, since it is larger than the sum of its proper divisors (51767).

2740789 is an equidigital number, since it uses as much as digits as its factorization.

2740789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51766.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 2740789 is about 1655.5328447361. The cubic root of 2740789 is about 139.9453698417.

The spelling of 2740789 in words is "two million, seven hundred forty thousand, seven hundred eighty-nine".