9987089 has 8 divisors (see below), whose sum is σ = 11440320. Its totient is φ = 8540496.

The previous prime is 9987071. The next prime is 9987091. The reversal of 9987089 is 9807899.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9987089 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (9987389) 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, 2162 + ... + 4964.

It is an arithmetic number, because the mean of its divisors is an integer number (1430040).

Almost surely, 2^9987089 is an apocalyptic number.

It is an amenable number.

9987089 is a deficient number, since it is larger than the sum of its proper divisors (1453231).

9987089 is a wasteful number, since it uses less digits than its factorization.

9987089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3319.

The product of its (nonzero) digits is 326592, while the sum is 50.

The square root of 9987089 is about 3160.2355924836. The cubic root of 9987089 is about 215.3507093835.

The spelling of 9987089 in words is "nine million, nine hundred eighty-seven thousand, eighty-nine".