5518439 has 12 divisors (see below), whose sum is σ = 5909400. Its totient is φ = 5146848.

The previous prime is 5518433. The next prime is 5518453. The reversal of 5518439 is 9348155.

It is not a de Polignac number, because 5518439 - 2⁴ = 5518423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5518399 and 5518408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5518433) 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 11 ways as a sum of consecutive naturals, for example, 39632 + ... + 39770.

It is an arithmetic number, because the mean of its divisors is an integer number (492450).

Almost surely, 2^5518439 is an apocalyptic number.

5518439 is a deficient number, since it is larger than the sum of its proper divisors (390961).

5518439 is a wasteful number, since it uses less digits than its factorization.

5518439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 205 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 5518439 is about 2349.1357985438. The cubic root of 5518439 is about 176.7144576217.

The spelling of 5518439 in words is "five million, five hundred eighteen thousand, four hundred thirty-nine".