989898943 has 12 divisors (see below), whose sum is σ = 1088934840. Its totient is φ = 899193680.

The previous prime is 989898941. The next prime is 989898983. The reversal of 989898943 is 349898989.

989898943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 989898943 - 2¹ = 989898941 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 not an unprimeable number, because it can be changed into a prime (989898941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204396 + ... + 209182.

It is an arithmetic number, because the mean of its divisors is an integer number (90744570).

Almost surely, 2^989898943 is an apocalyptic number.

989898943 is a deficient number, since it is larger than the sum of its proper divisors (99035897).

989898943 is a wasteful number, since it uses less digits than its factorization.

989898943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6518 (or 6507 counting only the distinct ones).

The product of its digits is 40310784, while the sum is 67.

The square root of 989898943 is about 31462.6595029727. The cubic root of 989898943 is about 996.6215801326.

The spelling of 989898943 in words is "nine hundred eighty-nine million, eight hundred ninety-eight thousand, nine hundred forty-three".