987951788 has 12 divisors (see below), whose sum is σ = 1734549432. Its totient is φ = 492366240.

The previous prime is 987951773. The next prime is 987951823. The reversal of 987951788 is 887159789.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 987951788.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 401033 + ... + 403488.

It is an arithmetic number, because the mean of its divisors is an integer number (144545786).

Almost surely, 2^987951788 is an apocalyptic number.

It is an amenable number.

987951788 is a deficient number, since it is larger than the sum of its proper divisors (746597644).

987951788 is a wasteful number, since it uses less digits than its factorization.

987951788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804832 (or 804830 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 62.

The square root of 987951788 is about 31431.7003676225. The cubic root of 987951788 is about 995.9676916774.

The spelling of 987951788 in words is "nine hundred eighty-seven million, nine hundred fifty-one thousand, seven hundred eighty-eight".