8447079880 has 48 divisors (see below), whose sum is σ = 19158224220. Its totient is φ = 3351970944.

The previous prime is 8447079877. The next prime is 8447079887. The reversal of 8447079880 is 889707448.

It can be written as a sum of positive squares in 2 ways, for example, as 8222499684 + 224580196 = 90678^2 + 14986^2 .

It is not an unprimeable number, because it can be changed into a prime (8447079887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 638614 + ... + 651706.

Almost surely, 2^8447079880 is an apocalyptic number.

It is an amenable number.

8447079880 is an abundant number, since it is smaller than the sum of its proper divisors (10711144340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8447079880 is a wasteful number, since it uses less digits than its factorization.

8447079880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13358 (or 13227 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 55.

The square root of 8447079880 is about 91907.9968229098. The cubic root of 8447079880 is about 2036.5834038456.

The spelling of 8447079880 in words is "eight billion, four hundred forty-seven million, seventy-nine thousand, eight hundred eighty".