6886142139 has 4 divisors (see below), whose sum is σ = 9181522856. Its totient is φ = 4590761424.

The previous prime is 6886142101. The next prime is 6886142141. The reversal of 6886142139 is 9312416886.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6886142139 - 2¹¹ = 6886140091 is a prime.

It is a super-2 number, since 2×6886142139² = 94837907117022990642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6886142239) 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 3 ways as a sum of consecutive naturals, for example, 1147690354 + ... + 1147690359.

It is an arithmetic number, because the mean of its divisors is an integer number (2295380714).

Almost surely, 2^6886142139 is an apocalyptic number.

6886142139 is a deficient number, since it is larger than the sum of its proper divisors (2295380717).

6886142139 is a wasteful number, since it uses less digits than its factorization.

6886142139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2295380716.

The product of its digits is 497664, while the sum is 48.

The square root of 6886142139 is about 82982.7821840169. The cubic root of 6886142139 is about 1902.5029007941.

The spelling of 6886142139 in words is "six billion, eight hundred eighty-six million, one hundred forty-two thousand, one hundred thirty-nine".