989898966 has 48 divisors (see below), whose sum is σ = 2456573184. Its totient is φ = 282205872.

The previous prime is 989898941. The next prime is 989898983. The reversal of 989898966 is 669898989.

It is a junction number, because it is equal to n+sod(n) for n = 989898894 and 989898903.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 50431 + ... + 67253.

It is an arithmetic number, because the mean of its divisors is an integer number (51178608).

Almost surely, 2^989898966 is an apocalyptic number.

989898966 is an abundant number, since it is smaller than the sum of its proper divisors (1466674218).

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

989898966 is a wasteful number, since it uses less digits than its factorization.

989898966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17305 (or 17302 counting only the distinct ones).

The product of its digits is 120932352, while the sum is 72.

The square root of 989898966 is about 31462.6598684854. The cubic root of 989898966 is about 996.6215878514.

The spelling of 989898966 in words is "nine hundred eighty-nine million, eight hundred ninety-eight thousand, nine hundred sixty-six".