9987683986 has 16 divisors (see below), whose sum is σ = 17328032064. Its totient is φ = 4228863984.

The previous prime is 9987683977. The next prime is 9987683989. The reversal of 9987683986 is 6893867899.

It is a happy number.

It is a super-3 number, since 3×9987683986³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (9987683989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4296465 + ... + 4298788.

It is an arithmetic number, because the mean of its divisors is an integer number (1083002004).

Almost surely, 2^9987683986 is an apocalyptic number.

9987683986 is a deficient number, since it is larger than the sum of its proper divisors (7340348078).

9987683986 is a wasteful number, since it uses less digits than its factorization.

9987683986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8595345.

The product of its digits is 282175488, while the sum is 73.

The square root of 9987683986 is about 99938.4009577900. The cubic root of 9987683986 is about 2153.5498584190.

The spelling of 9987683986 in words is "nine billion, nine hundred eighty-seven million, six hundred eighty-three thousand, nine hundred eighty-six".