2723439 has 4 divisors (see below), whose sum is σ = 3631256. Its totient is φ = 1815624.

The previous prime is 2723437. The next prime is 2723447. The reversal of 2723439 is 9343272.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2723439 - 2¹ = 2723437 is a prime.

It is a D-number.

It is a Duffinian number.

2723439 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2723431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453904 + ... + 453909.

It is an arithmetic number, because the mean of its divisors is an integer number (907814).

2^2723439 is an apocalyptic number.

2723439 is a deficient number, since it is larger than the sum of its proper divisors (907817).

2723439 is an equidigital number, since it uses as much as digits as its factorization.

2723439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907816.

The product of its digits is 9072, while the sum is 30.

The square root of 2723439 is about 1650.2845209236. The cubic root of 2723439 is about 139.6494460901.

The spelling of 2723439 in words is "two million, seven hundred twenty-three thousand, four hundred thirty-nine".