8999888742 has 24 divisors (see below), whose sum is σ = 20999740944. Its totient is φ = 2769196464.

The previous prime is 8999888719. The next prime is 8999888747. The reversal of 8999888742 is 2478889998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8999888747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19230298 + ... + 19230765.

It is an arithmetic number, because the mean of its divisors is an integer number (874989206).

Almost surely, 2^8999888742 is an apocalyptic number.

8999888742 is an abundant number, since it is smaller than the sum of its proper divisors (11999852202).

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

8999888742 is a wasteful number, since it uses less digits than its factorization.

8999888742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38461084 (or 38461081 counting only the distinct ones).

The product of its digits is 167215104, while the sum is 72.

The square root of 8999888742 is about 94867.7434220926. The cubic root of 8999888742 is about 2080.0752516845.

The spelling of 8999888742 in words is "eight billion, nine hundred ninety-nine million, eight hundred eighty-eight thousand, seven hundred forty-two".