8191080439 has 8 divisors (see below), whose sum is σ = 8219473920. Its totient is φ = 8162724216.

The previous prime is 8191080433. The next prime is 8191080463. The reversal of 8191080439 is 9340801918.

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 8191080439 - 2⁵ = 8191080407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8191080395 and 8191080404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8191080433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473704 + ... + 490690.

It is an arithmetic number, because the mean of its divisors is an integer number (1027434240).

Almost surely, 2^8191080439 is an apocalyptic number.

8191080439 is a deficient number, since it is larger than the sum of its proper divisors (28393481).

8191080439 is a wasteful number, since it uses less digits than its factorization.

8191080439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18629.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 8191080439 is about 90504.5879444794. The cubic root of 8191080439 is about 2015.7982489976.

The spelling of 8191080439 in words is "eight billion, one hundred ninety-one million, eighty thousand, four hundred thirty-nine".