8193888939 has 8 divisors (see below), whose sum is σ = 11567843280. Its totient is φ = 5141263616.

The previous prime is 8193888917. The next prime is 8193888959. The reversal of 8193888939 is 9398883918.

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 8193888939 - 2²¹ = 8191791787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8193888939.

It is not an unprimeable number, because it can be changed into a prime (8193888959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80332194 + ... + 80332295.

It is an arithmetic number, because the mean of its divisors is an integer number (1445980410).

Almost surely, 2^8193888939 is an apocalyptic number.

8193888939 is a deficient number, since it is larger than the sum of its proper divisors (3373954341).

8193888939 is a wasteful number, since it uses less digits than its factorization.

8193888939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160664509.

The product of its digits is 26873856, while the sum is 66.

The square root of 8193888939 is about 90520.1024027260. The cubic root of 8193888939 is about 2016.0286102425.

The spelling of 8193888939 in words is "eight billion, one hundred ninety-three million, eight hundred eighty-eight thousand, nine hundred thirty-nine".