9887231 has 4 divisors (see below), whose sum is σ = 10228200. Its totient is φ = 9546264.

The previous prime is 9887221. The next prime is 9887299. The reversal of 9887231 is 1327889.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9887231 - 2¹⁸ = 9625087 is a prime.

It is a super-2 number, since 2×9887231² = 195514673694722, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9887221) 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, 170441 + ... + 170498.

It is an arithmetic number, because the mean of its divisors is an integer number (2557050).

Almost surely, 2^9887231 is an apocalyptic number.

9887231 is a deficient number, since it is larger than the sum of its proper divisors (340969).

9887231 is a wasteful number, since it uses less digits than its factorization.

9887231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340968.

The product of its digits is 24192, while the sum is 38.

The square root of 9887231 is about 3144.3967624967. The cubic root of 9887231 is about 214.6305607888.

The spelling of 9887231 in words is "nine million, eight hundred eighty-seven thousand, two hundred thirty-one".