5218439 has 8 divisors (see below), whose sum is σ = 5660928. Its totient is φ = 4791040.

The previous prime is 5218417. The next prime is 5218441. The reversal of 5218439 is 9348125.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5218439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5218139) 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, 3047 + ... + 4440.

It is an arithmetic number, because the mean of its divisors is an integer number (707616).

Almost surely, 2^5218439 is an apocalyptic number.

5218439 is a deficient number, since it is larger than the sum of its proper divisors (442489).

5218439 is a wasteful number, since it uses less digits than its factorization.

5218439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7545.

The product of its digits is 8640, while the sum is 32.

The square root of 5218439 is about 2284.3902906465. The cubic root of 5218439 is about 173.4523562038.

The spelling of 5218439 in words is "five million, two hundred eighteen thousand, four hundred thirty-nine".