87089916 has 24 divisors (see below), whose sum is σ = 205784320. Its totient is φ = 28662192.

The previous prime is 87089911. The next prime is 87089917. The reversal of 87089916 is 61998078.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87089911) 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, 44986 + ... + 46881.

Almost surely, 2^87089916 is an apocalyptic number.

It is an amenable number.

87089916 is an abundant number, since it is smaller than the sum of its proper divisors (118694404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87089916 is a wasteful number, since it uses less digits than its factorization.

87089916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91953 (or 91951 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 87089916 is about 9332.1978118769. The cubic root of 87089916 is about 443.2573617471.

The spelling of 87089916 in words is "eighty-seven million, eighty-nine thousand, nine hundred sixteen".