99785912 has 8 divisors (see below), whose sum is σ = 187098600. Its totient is φ = 49892952.

The previous prime is 99785911. The next prime is 99785921. The reversal of 99785912 is 21958799.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99785911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6236612 + ... + 6236627.

It is an arithmetic number, because the mean of its divisors is an integer number (23387325).

Almost surely, 2^99785912 is an apocalyptic number.

It is an amenable number.

99785912 is a deficient number, since it is larger than the sum of its proper divisors (87312688).

99785912 is a wasteful number, since it uses less digits than its factorization.

99785912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12473245 (or 12473241 counting only the distinct ones).

The product of its digits is 408240, while the sum is 50.

The square root of 99785912 is about 9989.2898646500. The cubic root of 99785912 is about 463.8274105440.

The spelling of 99785912 in words is "ninety-nine million, seven hundred eighty-five thousand, nine hundred twelve".