2749439 has 12 divisors (see below), whose sum is σ = 3489768. Its totient is φ = 2142000.

The previous prime is 2749391. The next prime is 2749441. The reversal of 2749439 is 9349472.

It is not a de Polignac number, because 2749439 - 2⁸ = 2749183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2749499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2012 + ... + 3089.

It is an arithmetic number, because the mean of its divisors is an integer number (290814).

2^2749439 is an apocalyptic number.

2749439 is a deficient number, since it is larger than the sum of its proper divisors (740329).

2749439 is a wasteful number, since it uses less digits than its factorization.

2749439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5126 (or 5119 counting only the distinct ones).

The product of its digits is 54432, while the sum is 38.

The square root of 2749439 is about 1658.1432386860. The cubic root of 2749439 is about 140.0924389511.

The spelling of 2749439 in words is "two million, seven hundred forty-nine thousand, four hundred thirty-nine".