99787012 has 24 divisors (see below), whose sum is σ = 197960000. Its totient is φ = 43631136.

The previous prime is 99787003. The next prime is 99787013. The reversal of 99787012 is 21078799.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 99787012.

It is not an unprimeable number, because it can be changed into a prime (99787013) by changing a digit.

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, 49512 + ... + 51487.

Almost surely, 2^99787012 is an apocalyptic number.

It is an amenable number.

99787012 is a deficient number, since it is larger than the sum of its proper divisors (98172988).

99787012 is a wasteful number, since it uses less digits than its factorization.

99787012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101035 (or 101033 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 99787012 is about 9989.3449234672. The cubic root of 99787012 is about 463.8291148871.

The spelling of 99787012 in words is "ninety-nine million, seven hundred eighty-seven thousand, twelve".