999938005938 has 48 divisors (see below), whose sum is σ = 2292500620800. Its totient is φ = 314116630560.

The previous prime is 999938005909. The next prime is 999938005939. The reversal of 999938005938 is 839500839999.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (999938005939) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7588593 + ... + 7719236.

It is an arithmetic number, because the mean of its divisors is an integer number (47760429600).

Almost surely, 2^999938005938 is an apocalyptic number.

999938005938 is an abundant number, since it is smaller than the sum of its proper divisors (1292562614862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999938005938 is a wasteful number, since it uses less digits than its factorization.

999938005938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15308047 (or 15308044 counting only the distinct ones).

The product of its (nonzero) digits is 170061120, while the sum is 72.

The spelling of 999938005938 in words is "nine hundred ninety-nine billion, nine hundred thirty-eight million, five thousand, nine hundred thirty-eight".