99999199907 has 4 divisors (see below), whose sum is σ = 100661446416. Its totient is φ = 99336953400.

The previous prime is 99999199843. The next prime is 99999199913. The reversal of 99999199907 is 70999199999.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99999199907 - 2⁶ = 99999199843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99999199987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331123028 + ... + 331123329.

It is an arithmetic number, because the mean of its divisors is an integer number (25165361604).

Almost surely, 2^99999199907 is an apocalyptic number.

99999199907 is a deficient number, since it is larger than the sum of its proper divisors (662246509).

99999199907 is a wasteful number, since it uses less digits than its factorization.

99999199907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662246508.

The product of its (nonzero) digits is 301327047, while the sum is 80.

The spelling of 99999199907 in words is "ninety-nine billion, nine hundred ninety-nine million, one hundred ninety-nine thousand, nine hundred seven".