9866496986 has 8 divisors (see below), whose sum is σ = 15310081620. Its totient is φ = 4763136448.

The previous prime is 9866496953. The next prime is 9866497057. The reversal of 9866496986 is 6896946689.

9866496986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9593223025 + 273273961 = 97945^2 + 16531^2 .

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

It is an unprimeable number.

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, 85055951 + ... + 85056066.

Almost surely, 2^9866496986 is an apocalyptic number.

9866496986 is a deficient number, since it is larger than the sum of its proper divisors (5443584634).

9866496986 is a wasteful number, since it uses less digits than its factorization.

9866496986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170112048.

The product of its digits is 241864704, while the sum is 71.

The square root of 9866496986 is about 99330.2420514518. The cubic root of 9866496986 is about 2144.8042548086.

The spelling of 9866496986 in words is "nine billion, eight hundred sixty-six million, four hundred ninety-six thousand, nine hundred eighty-six".