9988864442 has 16 divisors (see below), whose sum is σ = 15641309952. Its totient is φ = 4775276880.

The previous prime is 9988864441. The next prime is 9988864447. The reversal of 9988864442 is 2444688899.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9988864441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68192 + ... + 156932.

It is an arithmetic number, because the mean of its divisors is an integer number (977581872).

Almost surely, 2^9988864442 is an apocalyptic number.

9988864442 is a deficient number, since it is larger than the sum of its proper divisors (5652445510).

9988864442 is a wasteful number, since it uses less digits than its factorization.

9988864442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91213.

The product of its digits is 31850496, while the sum is 62.

The square root of 9988864442 is about 99944.3067012824. The cubic root of 9988864442 is about 2153.6346985984.

The spelling of 9988864442 in words is "nine billion, nine hundred eighty-eight million, eight hundred sixty-four thousand, four hundred forty-two".