989536919390 has 8 divisors (see below), whose sum is σ = 1781166454920. Its totient is φ = 395814767752.

The previous prime is 989536919381. The next prime is 989536919407. The reversal of 989536919390 is 93919635989.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49476845960 + ... + 49476845979.

It is an arithmetic number, because the mean of its divisors is an integer number (222645806865).

Almost surely, 2^989536919390 is an apocalyptic number.

989536919390 is a deficient number, since it is larger than the sum of its proper divisors (791629535530).

989536919390 is a wasteful number, since it uses less digits than its factorization.

989536919390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98953691946.

The product of its (nonzero) digits is 127545840, while the sum is 71.

The spelling of 989536919390 in words is "nine hundred eighty-nine billion, five hundred thirty-six million, nine hundred nineteen thousand, three hundred ninety".