9887289 has 8 divisors (see below), whose sum is σ = 13637760. Its totient is φ = 6364176.

The previous prime is 9887221. The next prime is 9887299. The reversal of 9887289 is 9827889.

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

It is not a de Polignac number, because 9887289 - 2¹¹ = 9885241 is a prime.

9887289 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9887299) 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, 56737 + ... + 56910.

It is an arithmetic number, because the mean of its divisors is an integer number (1704720).

Almost surely, 2^9887289 is an apocalyptic number.

It is an amenable number.

9887289 is a deficient number, since it is larger than the sum of its proper divisors (3750471).

9887289 is a wasteful number, since it uses less digits than its factorization.

9887289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113679.

The product of its digits is 580608, while the sum is 51.

The square root of 9887289 is about 3144.4059852379. The cubic root of 9887289 is about 214.6309804731.

The spelling of 9887289 in words is "nine million, eight hundred eighty-seven thousand, two hundred eighty-nine".