9936289644 has 12 divisors (see below), whose sum is σ = 23184675864. Its totient is φ = 3312096544.

The previous prime is 9936289603. The next prime is 9936289667. The reversal of 9936289644 is 4469826399.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414012057 + ... + 414012080.

It is an arithmetic number, because the mean of its divisors is an integer number (1932056322).

Almost surely, 2^9936289644 is an apocalyptic number.

It is an amenable number.

9936289644 is an abundant number, since it is smaller than the sum of its proper divisors (13248386220).

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

9936289644 is a wasteful number, since it uses less digits than its factorization.

9936289644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828024144 (or 828024142 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 60.

The square root of 9936289644 is about 99680.9392210968. The cubic root of 9936289644 is about 2149.8496122680.

The spelling of 9936289644 in words is "nine billion, nine hundred thirty-six million, two hundred eighty-nine thousand, six hundred forty-four".