99987896 has 32 divisors (see below), whose sum is σ = 194620800. Its totient is φ = 48107520.

The previous prime is 99987893. The next prime is 99987907. The reversal of 99987896 is 69878999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99987893) 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, 46820 + ... + 48908.

It is an arithmetic number, because the mean of its divisors is an integer number (6081900).

Almost surely, 2^99987896 is an apocalyptic number.

It is an amenable number.

99987896 is a deficient number, since it is larger than the sum of its proper divisors (94632904).

99987896 is a wasteful number, since it uses less digits than its factorization.

99987896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2319 (or 2315 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 65.

The square root of 99987896 is about 9999.3947816855. The cubic root of 99987896 is about 464.1401553419.

The spelling of 99987896 in words is "ninety-nine million, nine hundred eighty-seven thousand, eight hundred ninety-six".