8979561140 has 24 divisors (see below), whose sum is σ = 20571358752. Its totient is φ = 3265294880.

The previous prime is 8979561127. The next prime is 8979561161. The reversal of 8979561140 is 411659798.

8979561140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20407874 + ... + 20408313.

It is an arithmetic number, because the mean of its divisors is an integer number (857139948).

Almost surely, 2^8979561140 is an apocalyptic number.

It is an amenable number.

8979561140 is an abundant number, since it is smaller than the sum of its proper divisors (11591797612).

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

8979561140 is a wasteful number, since it uses less digits than its factorization.

8979561140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40816207 (or 40816205 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 8979561140 is about 94760.5463259895. The cubic root of 8979561140 is about 2078.5080169037.

The spelling of 8979561140 in words is "eight billion, nine hundred seventy-nine million, five hundred sixty-one thousand, one hundred forty".