2723839 has 2 divisors, whose sum is σ = 2723840. Its totient is φ = 2723838.

The previous prime is 2723837. The next prime is 2723863. The reversal of 2723839 is 9383272.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2723839 - 2¹ = 2723837 is a prime.

Together with 2723837, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2723837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1361919 + 1361920.

It is an arithmetic number, because the mean of its divisors is an integer number (1361920).

2^2723839 is an apocalyptic number.

2723839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2723839 is an equidigital number, since it uses as much as digits as its factorization.

2723839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 2723839 is about 1650.4057076974. The cubic root of 2723839 is about 139.6562826724.

The spelling of 2723839 in words is "two million, seven hundred twenty-three thousand, eight hundred thirty-nine".