9899736 has 96 divisors (see below), whose sum is σ = 31153920. Its totient is φ = 2566080.

The previous prime is 9899731. The next prime is 9899753. The reversal of 9899736 is 6379989.

9899736 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9899731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20085 + ... + 20571.

It is an arithmetic number, because the mean of its divisors is an integer number (324520).

Almost surely, 2^9899736 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 9899736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15576960).

9899736 is an abundant number, since it is smaller than the sum of its proper divisors (21254184).

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

9899736 is a wasteful number, since it uses less digits than its factorization.

9899736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525 (or 510 counting only the distinct ones).

The product of its digits is 734832, while the sum is 51.

The square root of 9899736 is about 3146.3845918768. The cubic root of 9899736 is about 214.7210082368.

The spelling of 9899736 in words is "nine million, eight hundred ninety-nine thousand, seven hundred thirty-six".