9989709 has 8 divisors (see below), whose sum is σ = 13603200. Its totient is φ = 6518016.

The previous prime is 9989699. The next prime is 9989713. The reversal of 9989709 is 9079899.

9989709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9989709 - 2⁵ = 9989677 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9989729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35284 + ... + 35565.

It is an arithmetic number, because the mean of its divisors is an integer number (1700400).

Almost surely, 2^9989709 is an apocalyptic number.

It is an amenable number.

9989709 is a deficient number, since it is larger than the sum of its proper divisors (3613491).

9989709 is a wasteful number, since it uses less digits than its factorization.

9989709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70899.

The product of its (nonzero) digits is 367416, while the sum is 51.

The square root of 9989709 is about 3160.6500913578. The cubic root of 9989709 is about 215.3695393457.

The spelling of 9989709 in words is "nine million, nine hundred eighty-nine thousand, seven hundred nine".