9989907 has 8 divisors (see below), whose sum is σ = 13338576. Its totient is φ = 6650592.

The previous prime is 9989899. The next prime is 9989921. The reversal of 9989907 is 7099899.

9989907 is digitally balanced in base 2, base 3 and base 4, because in such bases 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 9989907 - 2³ = 9989899 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 9989907.

It is not an unprimeable number, because it can be changed into a prime (9989927) 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, 733 + ... + 4529.

It is an arithmetic number, because the mean of its divisors is an integer number (1667322).

Almost surely, 2^9989907 is an apocalyptic number.

9989907 is a deficient number, since it is larger than the sum of its proper divisors (3348669).

9989907 is a wasteful number, since it uses less digits than its factorization.

9989907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4677.

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

The square root of 9989907 is about 3160.6814138726. The cubic root of 9989907 is about 215.3709622396.

The spelling of 9989907 in words is "nine million, nine hundred eighty-nine thousand, nine hundred seven".