8439321836 has 12 divisors (see below), whose sum is σ = 16111432680. Its totient is φ = 3836055360.

The previous prime is 8439321829. The next prime is 8439321841. The reversal of 8439321836 is 6381239348.

It is a happy number.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95901341 + ... + 95901428.

It is an arithmetic number, because the mean of its divisors is an integer number (1342619390).

Almost surely, 2^8439321836 is an apocalyptic number.

It is an amenable number.

8439321836 is a deficient number, since it is larger than the sum of its proper divisors (7672110844).

8439321836 is a wasteful number, since it uses less digits than its factorization.

8439321836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191802784 (or 191802782 counting only the distinct ones).

The product of its digits is 746496, while the sum is 47.

The square root of 8439321836 is about 91865.7816382139. The cubic root of 8439321836 is about 2035.9597270491.

The spelling of 8439321836 in words is "eight billion, four hundred thirty-nine million, three hundred twenty-one thousand, eight hundred thirty-six".