2740839 has 8 divisors (see below), whose sum is σ = 3676272. Its totient is φ = 1816320.

The previous prime is 2740831. The next prime is 2740853. The reversal of 2740839 is 9380472.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2740839 - 2³ = 2740831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2740831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2122 + ... + 3159.

It is an arithmetic number, because the mean of its divisors is an integer number (459534).

2^2740839 is an apocalyptic number.

2740839 is a deficient number, since it is larger than the sum of its proper divisors (935433).

2740839 is a wasteful number, since it uses less digits than its factorization.

2740839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5457.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 2740839 is about 1655.5479455455. The cubic root of 2740839 is about 139.9462208407.

The spelling of 2740839 in words is "two million, seven hundred forty thousand, eight hundred thirty-nine".