9899098920 has 96 divisors (see below), whose sum is σ = 32200014600. Its totient is φ = 2637467136.

The previous prime is 9899098919. The next prime is 9899098927. The reversal of 9899098920 is 298909989.

It can be written as a sum of positive squares in 4 ways, for example, as 8038556964 + 1860541956 = 89658^2 + 43134^2 .

It is not an unprimeable number, because it can be changed into a prime (9899098927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 425346 + ... + 448014.

Almost surely, 2^9899098920 is an apocalyptic number.

9899098920 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9899098920 is an abundant number, since it is smaller than the sum of its proper divisors (22300915680).

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

9899098920 is a wasteful number, since it uses less digits than its factorization.

9899098920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23899 (or 23892 counting only the distinct ones).

The product of its (nonzero) digits is 7558272, while the sum is 63.

The square root of 9899098920 is about 99494.2155102496. The cubic root of 9899098920 is about 2147.1640214107.

It can be divided in two parts, 989 and 9098920, that added together give a palindrome (9099909).

The spelling of 9899098920 in words is "nine billion, eight hundred ninety-nine million, ninety-eight thousand, nine hundred twenty".