8428019439 has 16 divisors (see below), whose sum is σ = 12845654528. Its totient is φ = 4814901792.

The previous prime is 8428019417. The next prime is 8428019471. The reversal of 8428019439 is 9349108248.

It is not a de Polignac number, because 8428019439 - 2¹¹ = 8428017391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8428019539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51969 + ... + 139845.

It is an arithmetic number, because the mean of its divisors is an integer number (802853408).

Almost surely, 2^8428019439 is an apocalyptic number.

8428019439 is a deficient number, since it is larger than the sum of its proper divisors (4417635089).

8428019439 is a wasteful number, since it uses less digits than its factorization.

8428019439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92454.

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 8428019439 is about 91804.2452122994. The cubic root of 8428019439 is about 2035.0504318145.

The spelling of 8428019439 in words is "eight billion, four hundred twenty-eight million, nineteen thousand, four hundred thirty-nine".