9887744 has 56 divisors (see below), whose sum is σ = 21232368. Its totient is φ = 4587520.

The previous prime is 9887741. The next prime is 9887747. The reversal of 9887744 is 4477889.

It is an interprime number because it is at equal distance from previous prime (9887741) and next prime (9887747).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9887741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139229 + ... + 139299.

Almost surely, 2^9887744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9887744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10616184).

9887744 is an abundant number, since it is smaller than the sum of its proper divisors (11344624).

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

9887744 is an equidigital number, since it uses as much as digits as its factorization.

9887744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 90 counting only the distinct ones).

The product of its digits is 451584, while the sum is 47.

The square root of 9887744 is about 3144.4783351138. The cubic root of 9887744 is about 214.6342727675.

The spelling of 9887744 in words is "nine million, eight hundred eighty-seven thousand, seven hundred forty-four".