9936844836 has 24 divisors (see below), whose sum is σ = 24194057664. Its totient is φ = 3168269280.

The previous prime is 9936844823. The next prime is 9936844837. The reversal of 9936844836 is 6384486399.

It is a self number, because there is not a number n which added to its sum of digits gives 9936844836.

It is not an unprimeable number, because it can be changed into a prime (9936844837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18001255 + ... + 18001806.

It is an arithmetic number, because the mean of its divisors is an integer number (1008085736).

Almost surely, 2^9936844836 is an apocalyptic number.

It is an amenable number.

9936844836 is an abundant number, since it is smaller than the sum of its proper divisors (14257212828).

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

9936844836 is a wasteful number, since it uses less digits than its factorization.

9936844836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36003091 (or 36003089 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 60.

The square root of 9936844836 is about 99683.7240275462. The cubic root of 9936844836 is about 2149.8896526023.

The spelling of 9936844836 in words is "nine billion, nine hundred thirty-six million, eight hundred forty-four thousand, eight hundred thirty-six".