987545789 has 8 divisors (see below), whose sum is σ = 991327680. Its totient is φ = 983771776.

The previous prime is 987545773. The next prime is 987545809.

987545789 is nontrivially palindromic in base 10.

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 987545789 - 2⁴ = 987545773 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987545749) 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, 370349 + ... + 373005.

It is an arithmetic number, because the mean of its divisors is an integer number (123915960).

Almost surely, 2^987545789 is an apocalyptic number.

It is an amenable number.

987545789 is a deficient number, since it is larger than the sum of its proper divisors (3781891).

987545789 is a wasteful number, since it uses less digits than its factorization.

987545789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3939.

The product of its digits is 25401600, while the sum is 62.

The square root of 987545789 is about 31425.2412719457. The cubic root of 987545789 is about 995.8312419385.

The spelling of 987545789 in words is "nine hundred eighty-seven million, five hundred forty-five thousand, seven hundred eighty-nine".