989341442021 has 12 divisors (see below), whose sum is σ = 1053469714080. Its totient is φ = 928922470080.

The previous prime is 989341442017. The next prime is 989341442027. The reversal of 989341442021 is 120244143989.

It is a happy number.

It is not a de Polignac number, because 989341442021 - 2² = 989341442017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989341442027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3964025 + ... + 4206206.

It is an arithmetic number, because the mean of its divisors is an integer number (87789142840).

Almost surely, 2^989341442021 is an apocalyptic number.

It is an amenable number.

989341442021 is a deficient number, since it is larger than the sum of its proper divisors (64128272059).

989341442021 is a wasteful number, since it uses less digits than its factorization.

989341442021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8170684 (or 8170667 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 989341442021 in words is "nine hundred eighty-nine billion, three hundred forty-one million, four hundred forty-two thousand, twenty-one".