989809338 has 16 divisors (see below), whose sum is σ = 2262421440. Its totient is φ = 282802656.

The previous prime is 989809321. The next prime is 989809339. The reversal of 989809338 is 833908989.

It is not an unprimeable number, because it can be changed into a prime (989809339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11783403 + ... + 11783486.

It is an arithmetic number, because the mean of its divisors is an integer number (141401340).

Almost surely, 2^989809338 is an apocalyptic number.

989809338 is an abundant number, since it is smaller than the sum of its proper divisors (1272612102).

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

989809338 is a wasteful number, since it uses less digits than its factorization.

989809338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23566901.

The product of its (nonzero) digits is 3359232, while the sum is 57.

The square root of 989809338 is about 31461.2354811441. The cubic root of 989809338 is about 996.5915080490.

The spelling of 989809338 in words is "nine hundred eighty-nine million, eight hundred nine thousand, three hundred thirty-eight".