9898558988 has 12 divisors (see below), whose sum is σ = 17744977992. Its totient is φ = 4828565280.

The previous prime is 9898558981. The next prime is 9898559017. The reversal of 9898558988 is 8898558989.

It is not an unprimeable number, because it can be changed into a prime (9898558981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30178370 + ... + 30178697.

It is an arithmetic number, because the mean of its divisors is an integer number (1478748166).

Almost surely, 2^9898558988 is an apocalyptic number.

It is an amenable number.

9898558988 is a deficient number, since it is larger than the sum of its proper divisors (7846419004).

9898558988 is a wasteful number, since it uses less digits than its factorization.

9898558988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60357112 (or 60357110 counting only the distinct ones).

The product of its digits is 597196800, while the sum is 77.

The square root of 9898558988 is about 99491.5020893744. The cubic root of 9898558988 is about 2147.1249827180.

Subtracting from 9898558988 its reverse (8898558989), we obtain a palindrome (999999999).

The spelling of 9898558988 in words is "nine billion, eight hundred ninety-eight million, five hundred fifty-eight thousand, nine hundred eighty-eight".