989316686736 has 225 divisors, whose sum is σ = 3331702525899. Its totient is φ = 282590296128.

The previous prime is 989316686653. The next prime is 989316686759. The reversal of 989316686736 is 637686613989.

The square root of 989316686736 is 994644.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 250648315 + ... + 250652261.

Almost surely, 2^989316686736 is an apocalyptic number.

989316686736 is the 994644-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989316686736

989316686736 is an abundant number, since it is smaller than the sum of its proper divisors (2342385839163).

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

989316686736 is an frugal number, since it uses more digits than its factorization.

989316686736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7928 (or 3959 counting only the distinct ones).

The product of its digits is 423263232, while the sum is 72.

The spelling of 989316686736 in words is "nine hundred eighty-nine billion, three hundred sixteen million, six hundred eighty-six thousand, seven hundred thirty-six".