8228979872 has 24 divisors (see below), whose sum is σ = 16382841300. Its totient is φ = 4068258304.

The previous prime is 8228979817. The next prime is 8228979877. The reversal of 8228979872 is 2789798228.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8216334736 + 12645136 = 90644^2 + 3556^2 .

It is a super-2 number, since 2×8228979872² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8228979877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1441847 + ... + 1447542.

Almost surely, 2^8228979872 is an apocalyptic number.

It is an amenable number.

8228979872 is a deficient number, since it is larger than the sum of its proper divisors (8153861428).

8228979872 is a wasteful number, since it uses less digits than its factorization.

8228979872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2889488 (or 2889480 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 62.

The square root of 8228979872 is about 90713.7248270624. The cubic root of 8228979872 is about 2018.9024420190.

The spelling of 8228979872 in words is "eight billion, two hundred twenty-eight million, nine hundred seventy-nine thousand, eight hundred seventy-two".