999938005899 has 8 divisors (see below), whose sum is σ = 1523715056640. Its totient is φ = 571393146216.

The previous prime is 999938005889. The next prime is 999938005901. The reversal of 999938005899 is 998500839999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 999938005899 - 2⁵ = 999938005867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (999938005819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23808047739 + ... + 23808047780.

It is an arithmetic number, because the mean of its divisors is an integer number (190464382080).

Almost surely, 2^999938005899 is an apocalyptic number.

999938005899 is a deficient number, since it is larger than the sum of its proper divisors (523777050741).

999938005899 is a wasteful number, since it uses less digits than its factorization.

999938005899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47616095529.

The product of its (nonzero) digits is 510183360, while the sum is 78.

The spelling of 999938005899 in words is "nine hundred ninety-nine billion, nine hundred thirty-eight million, five thousand, eight hundred ninety-nine".