99999200009 has 2 divisors, whose sum is σ = 99999200010. Its totient is φ = 99999200008.

The previous prime is 99999200003. The next prime is 99999200017. The reversal of 99999200009 is 90000299999.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89691265225 + 10307934784 = 299485^2 + 101528^2 .

It is an emirp because it is prime and its reverse (90000299999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99999200009 - 2¹² = 99999195913 is a prime.

It is not a weakly prime, because it can be changed into another prime (99999200003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49999600004 + 49999600005.

It is an arithmetic number, because the mean of its divisors is an integer number (49999600005).

Almost surely, 2^99999200009 is an apocalyptic number.

It is an amenable number.

99999200009 is a deficient number, since it is larger than the sum of its proper divisors (1).

99999200009 is an equidigital number, since it uses as much as digits as its factorization.

99999200009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1062882, while the sum is 56.

The spelling of 99999200009 in words is "ninety-nine billion, nine hundred ninety-nine million, two hundred thousand, nine".