987834089 has 4 divisors (see below), whose sum is σ = 1077637200. Its totient is φ = 898030980.

The previous prime is 987834031. The next prime is 987834097. The reversal of 987834089 is 980438789.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 987834089 - 2²⁴ = 971056873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987884089) 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, 44901539 + ... + 44901560.

It is an arithmetic number, because the mean of its divisors is an integer number (269409300).

Almost surely, 2^987834089 is an apocalyptic number.

It is an amenable number.

987834089 is a deficient number, since it is larger than the sum of its proper divisors (89803111).

987834089 is a wasteful number, since it uses less digits than its factorization.

987834089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89803110.

The product of its (nonzero) digits is 3483648, while the sum is 56.

The square root of 987834089 is about 31429.8280141651. The cubic root of 987834089 is about 995.9281387835.

The spelling of 987834089 in words is "nine hundred eighty-seven million, eight hundred thirty-four thousand, eighty-nine".