9898987852 has 24 divisors (see below), whose sum is σ = 18737991216. Its totient is φ = 4548631488.

The previous prime is 9898987841. The next prime is 9898987853. The reversal of 9898987852 is 2587898989.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (9898987853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407503 + ... + 431110.

It is an arithmetic number, because the mean of its divisors is an integer number (780749634).

Almost surely, 2^9898987852 is an apocalyptic number.

It is an amenable number.

9898987852 is a deficient number, since it is larger than the sum of its proper divisors (8839003364).

9898987852 is a wasteful number, since it uses less digits than its factorization.

9898987852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838857 (or 838855 counting only the distinct ones).

The product of its digits is 209018880, while the sum is 73.

The square root of 9898987852 is about 99493.6573455816. The cubic root of 9898987852 is about 2147.1559909793.

The spelling of 9898987852 in words is "nine billion, eight hundred ninety-eight million, nine hundred eighty-seven thousand, eight hundred fifty-two".