99823395879 has 24 divisors (see below), whose sum is σ = 152342564400. Its totient is φ = 62811953280.

The previous prime is 99823395869. The next prime is 99823395901. The reversal of 99823395879 is 97859332899.

99823395879 is a `hidden beast` number, since 9 + 9 + 8 + 2 + 3 + 39 + 587 + 9 = 666.

It is not a de Polignac number, because 99823395879 - 2⁹ = 99823395367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99823395869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1039062 + ... + 1131059.

It is an arithmetic number, because the mean of its divisors is an integer number (6347606850).

Almost surely, 2^99823395879 is an apocalyptic number.

99823395879 is a deficient number, since it is larger than the sum of its proper divisors (52519168521).

99823395879 is a wasteful number, since it uses less digits than its factorization.

99823395879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170415 (or 2170412 counting only the distinct ones).

The product of its digits is 264539520, while the sum is 72.

The spelling of 99823395879 in words is "ninety-nine billion, eight hundred twenty-three million, three hundred ninety-five thousand, eight hundred seventy-nine".