5128839 has 20 divisors (see below), whose sum is σ = 7997616. Its totient is φ = 3269376.

The previous prime is 5128817. The next prime is 5128847. The reversal of 5128839 is 9388215.

It is not a de Polignac number, because 5128839 - 2⁸ = 5128583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5128859) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 487 + ... + 3239.

Almost surely, 2^5128839 is an apocalyptic number.

5128839 is a deficient number, since it is larger than the sum of its proper divisors (2868777).

5128839 is a wasteful number, since it uses less digits than its factorization.

5128839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2788 (or 2779 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 5128839 is about 2264.6940190675. The cubic root of 5128839 is about 172.4539007249.

The spelling of 5128839 in words is "five million, one hundred twenty-eight thousand, eight hundred thirty-nine".