8793993978 has 96 divisors (see below), whose sum is σ = 24334756992. Its totient is φ = 2228428800.

The previous prime is 8793993961. The next prime is 8793994007.

8793993978 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20551 + ... + 134202.

It is an arithmetic number, because the mean of its divisors is an integer number (253487052).

Almost surely, 2^8793993978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8793993978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12167378496).

8793993978 is an abundant number, since it is smaller than the sum of its proper divisors (15540763014).

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

8793993978 is a wasteful number, since it uses less digits than its factorization.

8793993978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154820 (or 154817 counting only the distinct ones).

The product of its digits is 185177664, while the sum is 72.

The square root of 8793993978 is about 93776.2975276802. The cubic root of 8793993978 is about 2064.0904348445.

The spelling of 8793993978 in words is "eight billion, seven hundred ninety-three million, nine hundred ninety-three thousand, nine hundred seventy-eight".