9886749894 has 72 divisors (see below), whose sum is σ = 25570813320. Its totient is φ = 2823324336.

The previous prime is 9886749871. The next prime is 9886749911. The reversal of 9886749894 is 4989476889.

9886749894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9886749894² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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 35 ways as a sum of consecutive naturals, for example, 5113752 + ... + 5115684.

It is an arithmetic number, because the mean of its divisors is an integer number (355150185).

Almost surely, 2^9886749894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9886749894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12785406660).

9886749894 is an abundant number, since it is smaller than the sum of its proper divisors (15684063426).

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

9886749894 is an equidigital number, since it uses as much as digits as its factorization.

9886749894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3891 (or 1945 counting only the distinct ones).

The product of its digits is 250822656, while the sum is 72.

The square root of 9886749894 is about 99432.1371287975. The cubic root of 9886749894 is about 2146.2707947282.

The spelling of 9886749894 in words is "nine billion, eight hundred eighty-six million, seven hundred forty-nine thousand, eight hundred ninety-four".