8091689384 has 16 divisors (see below), whose sum is σ = 15172941300. Its totient is φ = 4045571712.

The previous prime is 8091689381. The next prime is 8091689407. The reversal of 8091689384 is 4839861908.

It can be written as a sum of positive squares in 2 ways, for example, as 7766896900 + 324792484 = 88130^2 + 18022^2 .

It is not an unprimeable number, because it can be changed into a prime (8091689381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150812 + ... + 197300.

Almost surely, 2^8091689384 is an apocalyptic number.

It is an amenable number.

8091689384 is a deficient number, since it is larger than the sum of its proper divisors (7081251916).

8091689384 is a wasteful number, since it uses less digits than its factorization.

8091689384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68252 (or 68248 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 56.

The square root of 8091689384 is about 89953.8180623813. The cubic root of 8091689384 is about 2007.6117756838.

The spelling of 8091689384 in words is "eight billion, ninety-one million, six hundred eighty-nine thousand, three hundred eighty-four".