9989700 has 144 divisors (see below), whose sum is σ = 33997824. Its totient is φ = 2217600.

The previous prime is 9989699. The next prime is 9989713. The reversal of 9989700 is 79899.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140665 + ... + 140735.

It is an arithmetic number, because the mean of its divisors is an integer number (236096).

Almost surely, 2^9989700 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 9989700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16998912).

9989700 is an abundant number, since it is smaller than the sum of its proper divisors (24008124).

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

9989700 is a wasteful number, since it uses less digits than its factorization.

9989700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 9989700 is about 3160.6486675997. The cubic root of 9989700 is about 215.3694746683.

The spelling of 9989700 in words is "nine million, nine hundred eighty-nine thousand, seven hundred".