9873987 has 8 divisors (see below), whose sum is σ = 13200720. Its totient is φ = 6564960.

The previous prime is 9873979. The next prime is 9874003. The reversal of 9873987 is 7893789.

It is a happy number.

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

It is not a de Polignac number, because 9873987 - 2³ = 9873979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9873917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3064 + ... + 5397.

It is an arithmetic number, because the mean of its divisors is an integer number (1650090).

Almost surely, 2^9873987 is an apocalyptic number.

9873987 is a deficient number, since it is larger than the sum of its proper divisors (3326733).

9873987 is a wasteful number, since it uses less digits than its factorization.

9873987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8853.

The product of its digits is 762048, while the sum is 51.

The square root of 9873987 is about 3142.2900884546. The cubic root of 9873987 is about 214.5346850307.

The spelling of 9873987 in words is "nine million, eight hundred seventy-three thousand, nine hundred eighty-seven".