8944493921999 has 8 divisors (see below), whose sum is σ = 8963658216240. Its totient is φ = 8925335870400.

The previous prime is 8944493921983. The next prime is 8944493922061. The reversal of 8944493921999 is 9991293944498.

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

It is a cyclic number.

It is not a de Polignac number, because 8944493921999 - 2⁴ = 8944493921983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8944493921299) 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, 1313684 + ... + 4428854.

It is an arithmetic number, because the mean of its divisors is an integer number (1120457277030).

Almost surely, 2^{8944493921999} is an apocalyptic number.

8944493921999 is a deficient number, since it is larger than the sum of its proper divisors (19164294241).

8944493921999 is a wasteful number, since it uses less digits than its factorization.

8944493921999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121321.

The product of its digits is 1632586752, while the sum is 80.

The spelling of 8944493921999 in words is "eight trillion, nine hundred forty-four billion, four hundred ninety-three million, nine hundred twenty-one thousand, nine hundred ninety-nine".