987275539 has 4 divisors (see below), whose sum is σ = 991372360. Its totient is φ = 983178720.

The previous prime is 987275491. The next prime is 987275543. The reversal of 987275539 is 935572789.

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 987275539 - 2⁹ = 987275027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 987275539.

It is not an unprimeable number, because it can be changed into a prime (987275339) 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, 2048049 + ... + 2048530.

It is an arithmetic number, because the mean of its divisors is an integer number (247843090).

Almost surely, 2^987275539 is an apocalyptic number.

987275539 is a deficient number, since it is larger than the sum of its proper divisors (4096821).

987275539 is a wasteful number, since it uses less digits than its factorization.

987275539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4096820.

The product of its digits is 4762800, while the sum is 55.

The square root of 987275539 is about 31420.9410902984. The cubic root of 987275539 is about 995.7403945236.

The spelling of 987275539 in words is "nine hundred eighty-seven million, two hundred seventy-five thousand, five hundred thirty-nine".