8871921522 has 64 divisors (see below), whose sum is σ = 20789798400. Its totient is φ = 2796696720.

The previous prime is 8871921473. The next prime is 8871921523. The reversal of 8871921522 is 2251291788.

It is not an unprimeable number, because it can be changed into a prime (8871921523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 594897 + ... + 609627.

It is an arithmetic number, because the mean of its divisors is an integer number (324840600).

Almost surely, 2^8871921522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8871921522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10394899200).

8871921522 is an abundant number, since it is smaller than the sum of its proper divisors (11917876878).

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

8871921522 is a wasteful number, since it uses less digits than its factorization.

8871921522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15348 (or 15342 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 8871921522 is about 94190.8781252197. The cubic root of 8871921522 is about 2070.1694589268.

The spelling of 8871921522 in words is "eight billion, eight hundred seventy-one million, nine hundred twenty-one thousand, five hundred twenty-two".