987946887 has 16 divisors (see below), whose sum is σ = 1366373888. Its totient is φ = 634495680.

The previous prime is 987946877. The next prime is 987946913. The reversal of 987946887 is 788649789.

It is not a de Polignac number, because 987946887 - 2¹⁶ = 987881351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987946837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43039 + ... + 61872.

It is an arithmetic number, because the mean of its divisors is an integer number (85398368).

Almost surely, 2^987946887 is an apocalyptic number.

987946887 is a deficient number, since it is larger than the sum of its proper divisors (378427001).

987946887 is a wasteful number, since it uses less digits than its factorization.

987946887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105030.

The product of its digits is 48771072, while the sum is 66.

The square root of 987946887 is about 31431.6224048330. The cubic root of 987946887 is about 995.9660447530.

The spelling of 987946887 in words is "nine hundred eighty-seven million, nine hundred forty-six thousand, eight hundred eighty-seven".