9688989 has 4 divisors (see below), whose sum is σ = 12918656. Its totient is φ = 6459324.

The previous prime is 9688981. The next prime is 9689021. The reversal of 9688989 is 9898869.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 9688989 - 2³ = 9688981 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9688981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1614829 + ... + 1614834.

It is an arithmetic number, because the mean of its divisors is an integer number (3229664).

Almost surely, 2^9688989 is an apocalyptic number.

It is an amenable number.

9688989 is a deficient number, since it is larger than the sum of its proper divisors (3229667).

9688989 is a wasteful number, since it uses less digits than its factorization.

9688989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3229666.

The product of its digits is 2239488, while the sum is 57.

The square root of 9688989 is about 3112.7140890226. The cubic root of 9688989 is about 213.1863959419.

The spelling of 9688989 in words is "nine million, six hundred eighty-eight thousand, nine hundred eighty-nine".