99987936 has 48 divisors (see below), whose sum is σ = 262983168. Its totient is φ = 33264000.

The previous prime is 99987917. The next prime is 99987959. The reversal of 99987936 is 63978999.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 99987936.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94611 + ... + 95661.

It is an arithmetic number, because the mean of its divisors is an integer number (5478816).

Almost surely, 2^99987936 is an apocalyptic number.

99987936 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

99987936 is an abundant number, since it is smaller than the sum of its proper divisors (162995232).

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

99987936 is a wasteful number, since it uses less digits than its factorization.

99987936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055 (or 2047 counting only the distinct ones).

The product of its digits is 6613488, while the sum is 60.

The square root of 99987936 is about 9999.3967818064. The cubic root of 99987936 is about 464.1402172347.

The spelling of 99987936 in words is "ninety-nine million, nine hundred eighty-seven thousand, nine hundred thirty-six".