6886216389 has 16 divisors (see below), whose sum is σ = 9889572672. Its totient is φ = 4236955008.

The previous prime is 6886216339. The next prime is 6886216411. The reversal of 6886216389 is 9836126886.

It is not a de Polignac number, because 6886216389 - 2¹¹ = 6886214341 is a prime.

It is a super-2 number, since 2×6886216389² = 94839952312264398642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6886216319) 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 15 ways as a sum of consecutive naturals, for example, 305929 + ... + 327665.

It is an arithmetic number, because the mean of its divisors is an integer number (618098292).

Almost surely, 2^6886216389 is an apocalyptic number.

It is an amenable number.

6886216389 is a deficient number, since it is larger than the sum of its proper divisors (3003356283).

6886216389 is a wasteful number, since it uses less digits than its factorization.

6886216389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29876.

The product of its digits is 5971968, while the sum is 57.

The square root of 6886216389 is about 82983.2295647741. The cubic root of 6886216389 is about 1902.5097386979.

The spelling of 6886216389 in words is "six billion, eight hundred eighty-six million, two hundred sixteen thousand, three hundred eighty-nine".