9889861384224 has 72 divisors (see below), whose sum is σ = 28125598999680. Its totient is φ = 3296467413888.

The previous prime is 9889861384181. The next prime is 9889861384241. The reversal of 9889861384224 is 4224831689889.

9889861384224 is a `hidden beast` number, since 9 + 88 + 98 + 6 + 1 + 38 + 422 + 4 = 666.

It is a Cunningham number, because it is equal to 3144815²-1.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5503429 + ... + 7075835.

It is an arithmetic number, because the mean of its divisors is an integer number (390633319440).

Almost surely, 2^{9889861384224} is an apocalyptic number.

It is an amenable number.

9889861384224 is an abundant number, since it is smaller than the sum of its proper divisors (18235737615456).

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

9889861384224 is a wasteful number, since it uses less digits than its factorization.

9889861384224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594262 (or 1594251 counting only the distinct ones).

The product of its digits is 382205952, while the sum is 72.

The spelling of 9889861384224 in words is "nine trillion, eight hundred eighty-nine billion, eight hundred sixty-one million, three hundred eighty-four thousand, two hundred twenty-four".