987142289 has 12 divisors (see below), whose sum is σ = 1165451184. Its totient is φ = 833490504.

The previous prime is 987142253. The next prime is 987142297. The reversal of 987142289 is 982241789.

987142289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-987142289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987142249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147059 + ... + 153624.

It is an arithmetic number, because the mean of its divisors is an integer number (97120932).

Almost surely, 2^987142289 is an apocalyptic number.

It is an amenable number.

987142289 is a deficient number, since it is larger than the sum of its proper divisors (178308895).

987142289 is a wasteful number, since it uses less digits than its factorization.

987142289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300764 (or 300757 counting only the distinct ones).

The product of its digits is 580608, while the sum is 50.

The square root of 987142289 is about 31418.8206175853. The cubic root of 987142289 is about 995.6955950149.

The spelling of 987142289 in words is "nine hundred eighty-seven million, one hundred forty-two thousand, two hundred eighty-nine".