989898986 has 8 divisors (see below), whose sum is σ = 1485172164. Its totient is φ = 494841600.

The previous prime is 989898983. The next prime is 989898989. The reversal of 989898986 is 689898989.

It is an interprime number because it is at equal distance from previous prime (989898983) and next prime (989898989).

It can be written as a sum of positive squares in 2 ways, for example, as 988159225 + 1739761 = 31435^2 + 1319^2 .

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

It is not an unprimeable number, because it can be changed into a prime (989898983) by changing a digit.

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, 41945 + ... + 61148.

Almost surely, 2^989898986 is an apocalyptic number.

989898986 is a deficient number, since it is larger than the sum of its proper divisors (495273178).

989898986 is a wasteful number, since it uses less digits than its factorization.

989898986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107896.

The product of its digits is 161243136, while the sum is 74.

The square root of 989898986 is about 31462.6601863225. The cubic root of 989898986 is about 996.6215945633.

The spelling of 989898986 in words is "nine hundred eighty-nine million, eight hundred ninety-eight thousand, nine hundred eighty-six".