99923808297 has 4 divisors (see below), whose sum is σ = 133231744400. Its totient is φ = 66615872196.

The previous prime is 99923808289. The next prime is 99923808311. The reversal of 99923808297 is 79280832999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 99923808297 - 2³ = 99923808289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99923808217) 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 in 3 ways as a sum of consecutive naturals, for example, 16653968047 + ... + 16653968052.

It is an arithmetic number, because the mean of its divisors is an integer number (33307936100).

Almost surely, 2^99923808297 is an apocalyptic number.

It is an amenable number.

99923808297 is a deficient number, since it is larger than the sum of its proper divisors (33307936103).

99923808297 is a wasteful number, since it uses less digits than its factorization.

99923808297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33307936102.

The product of its (nonzero) digits is 35271936, while the sum is 66.

The spelling of 99923808297 in words is "ninety-nine billion, nine hundred twenty-three million, eight hundred eight thousand, two hundred ninety-seven".