5281228439 has 4 divisors (see below), whose sum is σ = 5301778224. Its totient is φ = 5260678656.

The previous prime is 5281228427. The next prime is 5281228441. The reversal of 5281228439 is 9348221825.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5281228439 - 2¹⁶ = 5281162903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5281228439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5281228039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10274507 + ... + 10275020.

It is an arithmetic number, because the mean of its divisors is an integer number (1325444556).

Almost surely, 2^5281228439 is an apocalyptic number.

5281228439 is a deficient number, since it is larger than the sum of its proper divisors (20549785).

5281228439 is a wasteful number, since it uses less digits than its factorization.

5281228439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20549784.

The product of its digits is 276480, while the sum is 44.

The square root of 5281228439 is about 72672.0609244020. The cubic root of 5281228439 is about 1741.4525721049.

The spelling of 5281228439 in words is "five billion, two hundred eighty-one million, two hundred twenty-eight thousand, four hundred thirty-nine".