5684639838 has 8 divisors (see below), whose sum is σ = 11369279688. Its totient is φ = 1894879944.

The previous prime is 5684639813. The next prime is 5684639869. The reversal of 5684639838 is 8389364865.

It is a happy number.

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

5684639838 is an admirable number.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473719981 + ... + 473719992.

It is an arithmetic number, because the mean of its divisors is an integer number (1421159961).

Almost surely, 2^5684639838 is an apocalyptic number.

5684639838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5684639838 is a wasteful number, since it uses less digits than its factorization.

5684639838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947439978.

The product of its digits is 29859840, while the sum is 60.

The square root of 5684639838 is about 75396.5505709645. The cubic root of 5684639838 is about 1784.7099768113.

The spelling of 5684639838 in words is "five billion, six hundred eighty-four million, six hundred thirty-nine thousand, eight hundred thirty-eight".