8797887978 has 96 divisors (see below), whose sum is σ = 20431251456. Its totient is φ = 2519748000.

The previous prime is 8797887977. The next prime is 8797887979.

8797887978 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (8797887977) and next prime (8797887979).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8797887977) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 963213 + ... + 972303.

It is an arithmetic number, because the mean of its divisors is an integer number (212825536).

Almost surely, 2^8797887978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8797887978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10215625728).

8797887978 is an abundant number, since it is smaller than the sum of its proper divisors (11633363478).

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

8797887978 is a wasteful number, since it uses less digits than its factorization.

8797887978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9192 (or 9181 counting only the distinct ones).

The product of its digits is 796594176, while the sum is 78.

The square root of 8797887978 is about 93797.0574058696. The cubic root of 8797887978 is about 2064.3950511586.

The spelling of 8797887978 in words is "eight billion, seven hundred ninety-seven million, eight hundred eighty-seven thousand, nine hundred seventy-eight".