999941222792 has 36 divisors (see below), whose sum is σ = 1921957041285. Its totient is φ = 487719639360.

The previous prime is 999941222789. The next prime is 999941222803. The reversal of 999941222792 is 297222149999.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 714116262916 + 285824959876 = 845054^2 + 534626^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=707086.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 115957793 + ... + 115966415.

Almost surely, 2^999941222792 is an apocalyptic number.

It is an amenable number.

999941222792 is a deficient number, since it is larger than the sum of its proper divisors (922015818493).

999941222792 is an frugal number, since it uses more digits than its factorization.

999941222792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17334 (or 8666 counting only the distinct ones).

The product of its digits is 26453952, while the sum is 65.

The spelling of 999941222792 in words is "nine hundred ninety-nine billion, nine hundred forty-one million, two hundred twenty-two thousand, seven hundred ninety-two".