6538839 has 8 divisors (see below), whose sum is σ = 8743680. Its totient is φ = 4346616.

The previous prime is 6538837. The next prime is 6538843. The reversal of 6538839 is 9388356.

6538839 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6538839 - 2¹ = 6538837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6538839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6538837) 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, 1869 + ... + 4070.

It is an arithmetic number, because the mean of its divisors is an integer number (1092960).

Almost surely, 2^6538839 is an apocalyptic number.

6538839 is a deficient number, since it is larger than the sum of its proper divisors (2204841).

6538839 is a wasteful number, since it uses less digits than its factorization.

6538839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6309.

The product of its digits is 155520, while the sum is 42.

The square root of 6538839 is about 2557.1153669712. The cubic root of 6538839 is about 186.9965301958.

The spelling of 6538839 in words is "six million, five hundred thirty-eight thousand, eight hundred thirty-nine".