999938005940 has 48 divisors (see below), whose sum is σ = 2128081912320. Its totient is φ = 394630133760.

The previous prime is 999938005939. The next prime is 999938005961. The reversal of 999938005940 is 49500839999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337325 + ... + 1453844.

It is an arithmetic number, because the mean of its divisors is an integer number (44335039840).

Almost surely, 2^999938005940 is an apocalyptic number.

It is an amenable number.

999938005940 is an abundant number, since it is smaller than the sum of its proper divisors (1128143906380).

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

999938005940 is a wasteful number, since it uses less digits than its factorization.

999938005940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791552 (or 1791550 counting only the distinct ones).

The product of its (nonzero) digits is 28343520, while the sum is 65.

The spelling of 999938005940 in words is "nine hundred ninety-nine billion, nine hundred thirty-eight million, five thousand, nine hundred forty".