8947879680 has 144 divisors (see below), whose sum is σ = 29499531264. Its totient is φ = 2309099520.

The previous prime is 8947879679. The next prime is 8947879709. The reversal of 8947879680 is 869787498.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81457 + ... + 156623.

It is an arithmetic number, because the mean of its divisors is an integer number (204857856).

Almost surely, 2^8947879680 is an apocalyptic number.

8947879680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8947879680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14749765632).

8947879680 is an abundant number, since it is smaller than the sum of its proper divisors (20551651584).

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

8947879680 is a wasteful number, since it uses less digits than its factorization.

8947879680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75222 (or 75208 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 66.

The square root of 8947879680 is about 94593.2327389227. The cubic root of 8947879680 is about 2076.0606900111.

The spelling of 8947879680 in words is "eight billion, nine hundred forty-seven million, eight hundred seventy-nine thousand, six hundred eighty".