989898965 has 16 divisors (see below), whose sum is σ = 1296677376. Its totient is φ = 719476800.

The previous prime is 989898941. The next prime is 989898983. The reversal of 989898965 is 569898989.

It is not a de Polignac number, because 989898965 - 2⁸ = 989898709 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 101660 + ... + 110970.

It is an arithmetic number, because the mean of its divisors is an integer number (81042336).

Almost surely, 2^989898965 is an apocalyptic number.

It is an amenable number.

989898965 is a deficient number, since it is larger than the sum of its proper divisors (306778411).

989898965 is a wasteful number, since it uses less digits than its factorization.

989898965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11260.

The product of its digits is 100776960, while the sum is 71.

The square root of 989898965 is about 31462.6598525935. The cubic root of 989898965 is about 996.6215875158.

The spelling of 989898965 in words is "nine hundred eighty-nine million, eight hundred ninety-eight thousand, nine hundred sixty-five".