989809208 has 32 divisors (see below), whose sum is σ = 1966734000. Its totient is φ = 466179840.

The previous prime is 989809201. The next prime is 989809231. The reversal of 989809208 is 802908989.

It is a self number, because there is not a number n which added to its sum of digits gives 989809208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989809201) 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, 42518 + ... + 61541.

Almost surely, 2^989809208 is an apocalyptic number.

It is an amenable number.

989809208 is a deficient number, since it is larger than the sum of its proper divisors (976924792).

989809208 is a wasteful number, since it uses less digits than its factorization.

989809208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104135 (or 104131 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 53.

The square root of 989809208 is about 31461.2334151095. The cubic root of 989809208 is about 996.5914644188.

The spelling of 989809208 in words is "nine hundred eighty-nine million, eight hundred nine thousand, two hundred eight".