2399839 has 8 divisors (see below), whose sum is σ = 2736720. Its totient is φ = 2084736.

The previous prime is 2399821. The next prime is 2399869. The reversal of 2399839 is 9389932.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2399839 - 2⁵ = 2399807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2399795 and 2399804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2399809) 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 7 ways as a sum of consecutive naturals, for example, 5209 + ... + 5650.

It is an arithmetic number, because the mean of its divisors is an integer number (342090).

2^2399839 is an apocalyptic number.

2399839 is a deficient number, since it is larger than the sum of its proper divisors (336881).

2399839 is a wasteful number, since it uses less digits than its factorization.

2399839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10889.

The product of its digits is 104976, while the sum is 43.

The square root of 2399839 is about 1549.1413750849. The cubic root of 2399839 is about 133.8835960966.

The spelling of 2399839 in words is "two million, three hundred ninety-nine thousand, eight hundred thirty-nine".