5639538 has 8 divisors (see below), whose sum is σ = 11279088. Its totient is φ = 1879844.

The previous prime is 5639533. The next prime is 5639549. The reversal of 5639538 is 8359365.

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

5639538 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5639496 and 5639505.

It is not an unprimeable number, because it can be changed into a prime (5639533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469956 + ... + 469967.

It is an arithmetic number, because the mean of its divisors is an integer number (1409886).

Almost surely, 2^5639538 is an apocalyptic number.

5639538 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.

5639538 is a wasteful number, since it uses less digits than its factorization.

5639538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939928.

The product of its digits is 97200, while the sum is 39.

The square root of 5639538 is about 2374.7711468687. The cubic root of 5639538 is about 177.9977485723.

It can be divided in two parts, 563 and 9538, that added together give a palindrome (10101).

The spelling of 5639538 in words is "five million, six hundred thirty-nine thousand, five hundred thirty-eight".