2739839 has 4 divisors (see below), whose sum is σ = 2901024. Its totient is φ = 2578656.

The previous prime is 2739817. The next prime is 2739853. The reversal of 2739839 is 9389372.

2739839 is nontrivially palindromic in base 9.

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

It is a cyclic number.

It is not a de Polignac number, because 2739839 - 2¹⁶ = 2674303 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 7⁶ + 3 + 9 + 8⁷ + 3⁶ + 9 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2739796 and 2739805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2739809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80567 + ... + 80600.

It is an arithmetic number, because the mean of its divisors is an integer number (725256).

2^2739839 is an apocalyptic number.

2739839 is a deficient number, since it is larger than the sum of its proper divisors (161185).

2739839 is a wasteful number, since it uses less digits than its factorization.

2739839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161184.

The product of its digits is 81648, while the sum is 41.

The square root of 2739839 is about 1655.2459031818. The cubic root of 2739839 is about 139.9291988942.

The spelling of 2739839 in words is "two million, seven hundred thirty-nine thousand, eight hundred thirty-nine".