87999916 has 12 divisors (see below), whose sum is σ = 156610440. Its totient is φ = 43254080.

The previous prime is 87999883. The next prime is 87999929. The reversal of 87999916 is 61999978.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186205 + ... + 186676.

It is an arithmetic number, because the mean of its divisors is an integer number (13050870).

Almost surely, 2^87999916 is an apocalyptic number.

It is an amenable number.

87999916 is a deficient number, since it is larger than the sum of its proper divisors (68610524).

87999916 is a wasteful number, since it uses less digits than its factorization.

87999916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372944 (or 372942 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 58.

The square root of 87999916 is about 9380.8270424307. The cubic root of 87999916 is about 444.7958765878.

The spelling of 87999916 in words is "eighty-seven million, nine hundred ninety-nine thousand, nine hundred sixteen".