8979789984 has 96 divisors (see below), whose sum is σ = 25942762944. Its totient is φ = 2697031680.

The previous prime is 8979789961. The next prime is 8979789991. The reversal of 8979789984 is 4899879798.

It is a tau number, because it is divible by the number of its divisors (96).

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, 81702 + ... + 156954.

It is an arithmetic number, because the mean of its divisors is an integer number (270237114).

Almost surely, 2^8979789984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8979789984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12971381472).

8979789984 is an abundant number, since it is smaller than the sum of its proper divisors (16962972960).

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

8979789984 is a wasteful number, since it uses less digits than its factorization.

8979789984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75390 (or 75382 counting only the distinct ones).

The product of its digits is 658409472, while the sum is 78.

The square root of 8979789984 is about 94761.7538039477. The cubic root of 8979789984 is about 2078.5256736704.

The spelling of 8979789984 in words is "eight billion, nine hundred seventy-nine million, seven hundred eighty-nine thousand, nine hundred eighty-four".