99786788 has 24 divisors (see below), whose sum is σ = 184040640. Its totient is φ = 47247200.

The previous prime is 99786779. The next prime is 99786829. The reversal of 99786788 is 88768799.

It is a super-4 number, since 4×99786788⁴ (a number of 33 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99786788.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3923 + ... + 14661.

It is an arithmetic number, because the mean of its divisors is an integer number (7668360).

Almost surely, 2^99786788 is an apocalyptic number.

It is an amenable number.

99786788 is a deficient number, since it is larger than the sum of its proper divisors (84253852).

99786788 is a wasteful number, since it uses less digits than its factorization.

99786788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10867 (or 10865 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 62.

The square root of 99786788 is about 9989.3337115145. Note that the first 3 decimals coincide. The cubic root of 99786788 is about 463.8287678219.

The spelling of 99786788 in words is "ninety-nine million, seven hundred eighty-six thousand, seven hundred eighty-eight".