989898906 has 16 divisors (see below), whose sum is σ = 1980115200. Its totient is φ = 329913408.

The previous prime is 989898887. The next prime is 989898929. The reversal of 989898906 is 609898989.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52290 + ... + 68658.

It is an arithmetic number, because the mean of its divisors is an integer number (123757200).

Almost surely, 2^989898906 is an apocalyptic number.

989898906 is an abundant number, since it is smaller than the sum of its proper divisors (990216294).

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

989898906 is a wasteful number, since it uses less digits than its factorization.

989898906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26453.

The product of its (nonzero) digits is 20155392, while the sum is 66.

The square root of 989898906 is about 31462.6589149741. The cubic root of 989898906 is about 996.6215677156.

The spelling of 989898906 in words is "nine hundred eighty-nine million, eight hundred ninety-eight thousand, nine hundred six".