989894744 has 32 divisors (see below), whose sum is σ = 1950571920. Its totient is φ = 470365056.

The previous prime is 989894687. The next prime is 989894747. The reversal of 989894744 is 447498989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989894747) 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 7 ways as a sum of consecutive naturals, for example, 26159 + ... + 51614.

Almost surely, 2^989894744 is an apocalyptic number.

It is an amenable number.

989894744 is a deficient number, since it is larger than the sum of its proper divisors (960677176).

989894744 is a wasteful number, since it uses less digits than its factorization.

989894744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77859 (or 77855 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 62.

The square root of 989894744 is about 31462.5927730059. The cubic root of 989894744 is about 996.6201709585.

The spelling of 989894744 in words is "nine hundred eighty-nine million, eight hundred ninety-four thousand, seven hundred forty-four".