987875789 has 8 divisors (see below), whose sum is σ = 993012000. Its totient is φ = 982753200.

The previous prime is 987875773. The next prime is 987875821. The reversal of 987875789 is 987578789.

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

It is a cyclic number.

It is not a de Polignac number, because 987875789 - 2⁴ = 987875773 is a prime.

It is a super-3 number, since 3×987875789³ (a number of 28 digits) contains 333 as substring.

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 (987875489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162179 + ... + 168159.

It is an arithmetic number, because the mean of its divisors is an integer number (124126500).

Almost surely, 2^987875789 is an apocalyptic number.

It is an amenable number.

987875789 is a deficient number, since it is larger than the sum of its proper divisors (5136211).

987875789 is a wasteful number, since it uses less digits than its factorization.

987875789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6811.

The product of its digits is 71124480, while the sum is 68.

The square root of 987875789 is about 31430.4913897317. The cubic root of 987875789 is about 995.9421524792.

The spelling of 987875789 in words is "nine hundred eighty-seven million, eight hundred seventy-five thousand, seven hundred eighty-nine".