989536919389 has 16 divisors (see below), whose sum is σ = 1011286425600. Its totient is φ = 967903425216.

The previous prime is 989536919381. The next prime is 989536919407. The reversal of 989536919389 is 983919635989.

It is a cyclic number.

It is not a de Polignac number, because 989536919389 - 2³ = 989536919381 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 (989536919381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64419492 + ... + 64434850.

It is an arithmetic number, because the mean of its divisors is an integer number (63205401600).

Almost surely, 2^989536919389 is an apocalyptic number.

It is an amenable number.

989536919389 is a deficient number, since it is larger than the sum of its proper divisors (21749506211).

989536919389 is a wasteful number, since it uses less digits than its factorization.

989536919389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19044.

The product of its digits is 1020366720, while the sum is 79.

The spelling of 989536919389 in words is "nine hundred eighty-nine billion, five hundred thirty-six million, nine hundred nineteen thousand, three hundred eighty-nine".