9999998844 has 48 divisors (see below), whose sum is σ = 25461668736. Its totient is φ = 3029454400.

The previous prime is 9999998837. The next prime is 9999998861. The reversal of 9999998844 is 4488999999.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 9999998844.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 591874 + ... + 608534.

It is an arithmetic number, because the mean of its divisors is an integer number (530451432).

Almost surely, 2^9999998844 is an apocalyptic number.

It is an amenable number.

9999998844 is an abundant number, since it is smaller than the sum of its proper divisors (15461669892).

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

9999998844 is a wasteful number, since it uses less digits than its factorization.

9999998844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21226 (or 21224 counting only the distinct ones).

The product of its digits is 544195584, while the sum is 78.

The square root of 9999998844 is about 99999.9942199998. The cubic root of 9999998844 is about 2154.4346070143.

The spelling of 9999998844 in words is "nine billion, nine hundred ninety-nine million, nine hundred ninety-eight thousand, eight hundred forty-four".