99200072 has 8 divisors (see below), whose sum is σ = 186000150. Its totient is φ = 49600032.

The previous prime is 99200069. The next prime is 99200077. The reversal of 99200072 is 27000299.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 89378116 + 9821956 = 9454^2 + 3134^2 .

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

It is not an unprimeable number, because it can be changed into a prime (99200077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6199997 + ... + 6200012.

Almost surely, 2^99200072 is an apocalyptic number.

It is an amenable number.

99200072 is a deficient number, since it is larger than the sum of its proper divisors (86800078).

99200072 is a wasteful number, since it uses less digits than its factorization.

99200072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12400015 (or 12400011 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 99200072 is about 9959.9232928773. The cubic root of 99200072 is about 462.9179229014.

The spelling of 99200072 in words is "ninety-nine million, two hundred thousand, seventy-two".