5639838 has 8 divisors (see below), whose sum is σ = 11279688. Its totient is φ = 1879944.

The previous prime is 5639831. The next prime is 5639839. The reversal of 5639838 is 8389365.

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

5639838 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 5639838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5639831) 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, 469981 + ... + 469992.

It is an arithmetic number, because the mean of its divisors is an integer number (1409961).

Almost surely, 2^5639838 is an apocalyptic number.

5639838 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.

5639838 is a wasteful number, since it uses less digits than its factorization.

5639838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939978.

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

The square root of 5639838 is about 2374.8343100099. The cubic root of 5639838 is about 178.0009047633. Note that the first 3 decimals are identical.

It can be divided in two parts, 563 and 9838, that added together give a palindrome (10401).

The spelling of 5639838 in words is "five million, six hundred thirty-nine thousand, eight hundred thirty-eight".