9899441826 has 16 divisors (see below), whose sum is σ = 20840930400. Its totient is φ = 3126139488.

The previous prime is 9899441809. The next prime is 9899441833. The reversal of 9899441826 is 6281449989.

9899441826 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 9899441826.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43418491 + ... + 43418718.

It is an arithmetic number, because the mean of its divisors is an integer number (1302558150).

Almost surely, 2^9899441826 is an apocalyptic number.

9899441826 is an abundant number, since it is smaller than the sum of its proper divisors (10941488574).

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

9899441826 is a wasteful number, since it uses less digits than its factorization.

9899441826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86837233.

The product of its digits is 8957952, while the sum is 60.

The square root of 9899441826 is about 99495.9387412371. The cubic root of 9899441826 is about 2147.1888137994.

It can be divided in two parts, 9899 and 441826, that added together give a triangular number (451725 = T₉₅₀).

The spelling of 9899441826 in words is "nine billion, eight hundred ninety-nine million, four hundred forty-one thousand, eight hundred twenty-six".