9859606644 has 48 divisors (see below), whose sum is σ = 23867928000. Its totient is φ = 3164023296.

The previous prime is 9859606591. The next prime is 9859606649. The reversal of 9859606644 is 4466069589.

It is a happy number.

9859606644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9859606649) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 79932 + ... + 161580.

It is an arithmetic number, because the mean of its divisors is an integer number (497248500).

Almost surely, 2^9859606644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9859606644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11933964000).

9859606644 is an abundant number, since it is smaller than the sum of its proper divisors (14008321356).

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

9859606644 is a wasteful number, since it uses less digits than its factorization.

9859606644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82032 (or 82030 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 57.

The square root of 9859606644 is about 99295.5519849706. The cubic root of 9859606644 is about 2144.3048585047.

The spelling of 9859606644 in words is "nine billion, eight hundred fifty-nine million, six hundred six thousand, six hundred forty-four".