987964 has 12 divisors (see below), whose sum is σ = 1736224. Its totient is φ = 491904.

The previous prime is 987941. The next prime is 987971. The reversal of 987964 is 469789.

It is a self number, because there is not a number n which added to its sum of digits gives 987964.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1132 + ... + 1804.

2⁹⁸⁷⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

987964 is a deficient number, since it is larger than the sum of its proper divisors (748260).

987964 is a wasteful number, since it uses less digits than its factorization.

987964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044 (or 1042 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 987964 is about 993.9637820363. The cubic root of 987964 is about 99.5971795355.

The spelling of 987964 in words is "nine hundred eighty-seven thousand, nine hundred sixty-four".