987940816 has 40 divisors (see below), whose sum is σ = 1931260320. Its totient is φ = 489573504.

The previous prime is 987940801. The next prime is 987940817. The reversal of 987940816 is 618049789.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987940817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1194195 + ... + 1195021.

It is an arithmetic number, because the mean of its divisors is an integer number (48281508).

Almost surely, 2^987940816 is an apocalyptic number.

It is an amenable number.

987940816 is a deficient number, since it is larger than the sum of its proper divisors (943319504).

987940816 is a wasteful number, since it uses less digits than its factorization.

987940816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411 (or 1405 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 987940816 is about 31431.5258299689. The cubic root of 987940816 is about 995.9640046560.

The spelling of 987940816 in words is "nine hundred eighty-seven million, nine hundred forty thousand, eight hundred sixteen".