9818986 has 8 divisors (see below), whose sum is σ = 15126660. Its totient is φ = 4776768.

The previous prime is 9818969. The next prime is 9819031. The reversal of 9818986 is 6898189.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9765625 + 53361 = 3125^2 + 231^2 .

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66271 + ... + 66418.

Almost surely, 2^9818986 is an apocalyptic number.

9818986 is a deficient number, since it is larger than the sum of its proper divisors (5307674).

9818986 is a wasteful number, since it uses less digits than its factorization.

9818986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132728.

The product of its digits is 248832, while the sum is 49.

The square root of 9818986 is about 3133.5261288204. The cubic root of 9818986 is about 214.1356027625.

The spelling of 9818986 in words is "nine million, eight hundred eighteen thousand, nine hundred eighty-six".