8543991139 has 8 divisors (see below), whose sum is σ = 8588106432. Its totient is φ = 8499910440.

The previous prime is 8543991119. The next prime is 8543991161. The reversal of 8543991139 is 9311993458.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8543991139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8543991109) 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, 592752 + ... + 606994.

It is an arithmetic number, because the mean of its divisors is an integer number (1073513304).

Almost surely, 2^8543991139 is an apocalyptic number.

8543991139 is a deficient number, since it is larger than the sum of its proper divisors (44115293).

8543991139 is a wasteful number, since it uses less digits than its factorization.

8543991139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17297.

The product of its digits is 1049760, while the sum is 52.

The square root of 8543991139 is about 92433.7121346968. The cubic root of 8543991139 is about 2044.3422133833.

It can be divided in two parts, 854 and 3991139, that added together give a palindrome (3991993).

The spelling of 8543991139 in words is "eight billion, five hundred forty-three million, nine hundred ninety-one thousand, one hundred thirty-nine".