989894946 has 64 divisors (see below), whose sum is σ = 2129863680. Its totient is φ = 305778240.

The previous prime is 989894911. The next prime is 989894947. The reversal of 989894946 is 649498989.

It is not an unprimeable number, because it can be changed into a prime (989894947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1967731 + ... + 1968233.

It is an arithmetic number, because the mean of its divisors is an integer number (33279120).

Almost surely, 2^989894946 is an apocalyptic number.

989894946 is an abundant number, since it is smaller than the sum of its proper divisors (1139968734).

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

989894946 is a wasteful number, since it uses less digits than its factorization.

989894946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871.

The product of its digits is 40310784, while the sum is 66.

The square root of 989894946 is about 31462.5959831671. The cubic root of 989894946 is about 996.6202387493.

The spelling of 989894946 in words is "nine hundred eighty-nine million, eight hundred ninety-four thousand, nine hundred forty-six".