9889812842 has 16 divisors (see below), whose sum is σ = 18258116352. Its totient is φ = 3912453360.

The previous prime is 9889812809. The next prime is 9889812853. The reversal of 9889812842 is 2482189889.

9889812842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 27169634 + ... + 27169997.

It is an arithmetic number, because the mean of its divisors is an integer number (1141132272).

Almost surely, 2^9889812842 is an apocalyptic number.

9889812842 is a deficient number, since it is larger than the sum of its proper divisors (8368303510).

9889812842 is a wasteful number, since it uses less digits than its factorization.

9889812842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54339653.

The product of its digits is 5308416, while the sum is 59.

The square root of 9889812842 is about 99447.5381394633. The cubic root of 9889812842 is about 2146.4924124540.

The spelling of 9889812842 in words is "nine billion, eight hundred eighty-nine million, eight hundred twelve thousand, eight hundred forty-two".