9663944380 has 24 divisors (see below), whose sum is σ = 20442422448. Its totient is φ = 3837360768.

The previous prime is 9663944377. The next prime is 9663944413. The reversal of 9663944380 is 834493669.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1760754 + ... + 1766233.

It is an arithmetic number, because the mean of its divisors is an integer number (851767602).

Almost surely, 2^9663944380 is an apocalyptic number.

It is an amenable number.

9663944380 is an abundant number, since it is smaller than the sum of its proper divisors (10778478068).

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

9663944380 is a wasteful number, since it uses less digits than its factorization.

9663944380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3527133 (or 3527131 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 52.

The square root of 9663944380 is about 98305.3629259360. The cubic root of 9663944380 is about 2130.0255222610.

The spelling of 9663944380 in words is "nine billion, six hundred sixty-three million, nine hundred forty-four thousand, three hundred eighty".