5538639 has 8 divisors (see below), whose sum is σ = 7489152. Its totient is φ = 3640280.

The previous prime is 5538581. The next prime is 5538647. The reversal of 5538639 is 9368355.

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 5538639 - 2²⁰ = 4490063 is a prime.

It is a super-3 number, since 3×5538639³ (a number of 21 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5538597 and 5538606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5538679) 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 7 ways as a sum of consecutive naturals, for example, 12789 + ... + 13214.

It is an arithmetic number, because the mean of its divisors is an integer number (936144).

Almost surely, 2^5538639 is an apocalyptic number.

5538639 is a deficient number, since it is larger than the sum of its proper divisors (1950513).

5538639 is a wasteful number, since it uses less digits than its factorization.

5538639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26077.

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

The square root of 5538639 is about 2353.4313246832. The cubic root of 5538639 is about 176.9298135334.

The spelling of 5538639 in words is "five million, five hundred thirty-eight thousand, six hundred thirty-nine".