8438279812 has 12 divisors (see below), whose sum is σ = 14849488080. Its totient is φ = 4195568936.

The previous prime is 8438279809. The next prime is 8438279821. The reversal of 8438279812 is 2189728348.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 8438279812.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5891938 + ... + 5893369.

It is an arithmetic number, because the mean of its divisors is an integer number (1237457340).

Almost surely, 2^8438279812 is an apocalyptic number.

It is an amenable number.

8438279812 is a deficient number, since it is larger than the sum of its proper divisors (6411208268).

8438279812 is a wasteful number, since it uses less digits than its factorization.

8438279812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11785490 (or 11785488 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 52.

The square root of 8438279812 is about 91860.1100151747. The cubic root of 8438279812 is about 2035.8759286009.

The spelling of 8438279812 in words is "eight billion, four hundred thirty-eight million, two hundred seventy-nine thousand, eight hundred twelve".