39886396218 has 16 divisors (see below), whose sum is σ = 88636436160. Its totient is φ = 13295465388.

The previous prime is 39886396213. The next prime is 39886396241. The reversal of 39886396218 is 81269368893.

It is not an unprimeable number, because it can be changed into a prime (39886396213) 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 7 ways as a sum of consecutive naturals, for example, 369318430 + ... + 369318537.

It is an arithmetic number, because the mean of its divisors is an integer number (5539777260).

Almost surely, 2^39886396218 is an apocalyptic number.

39886396218 is an abundant number, since it is smaller than the sum of its proper divisors (48750039942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39886396218 is a wasteful number, since it uses less digits than its factorization.

39886396218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738636978 (or 738636972 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 63.

The spelling of 39886396218 in words is "thirty-nine billion, eight hundred eighty-six million, three hundred ninety-six thousand, two hundred eighteen".