8979218820 has 576 divisors, whose sum is σ = 34192247040. Its totient is φ = 1944518400.

The previous prime is 8979218803. The next prime is 8979218861. The reversal of 8979218820 is 288129798.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 289652205 + ... + 289652235.

It is an arithmetic number, because the mean of its divisors is an integer number (59361540).

Almost surely, 2^8979218820 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 8979218820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17096123520).

8979218820 is an abundant number, since it is smaller than the sum of its proper divisors (25213028220).

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

8979218820 is a wasteful number, since it uses less digits than its factorization.

8979218820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The square root of 8979218820 is about 94758.7400718266. The cubic root of 8979218820 is about 2078.4816041836.

The spelling of 8979218820 in words is "eight billion, nine hundred seventy-nine million, two hundred eighteen thousand, eight hundred twenty".