9789739868736 has 63 divisors (see below), whose sum is σ = 28060736982681. Its totient is φ = 3263221592064.

The previous prime is 9789739868731. The next prime is 9789739868747. The reversal of 9789739868736 is 6378689379879.

The square root of 9789739868736 is 3128856.

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

9789739868736 is a `hidden beast` number, since 9 + 7 + 8 + 97 + 398 + 68 + 73 + 6 = 666.

9789739868736 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2476393206336 + 7313346662400 = 1573656^2 + 2704320^2 .

It is not an unprimeable number, because it can be changed into a prime (9789739868731) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 75027360 + ... + 75157728.

Almost surely, 2^{9789739868736} is an apocalyptic number.

9789739868736 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

9789739868736 is the 3128856-th square number.

It is an amenable number.

9789739868736 is an abundant number, since it is smaller than the sum of its proper divisors (18270997113945).

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

9789739868736 is an frugal number, since it uses more digits than its factorization.

9789739868736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260756 (or 130374 counting only the distinct ones).

The product of its digits is 41479796736, while the sum is 90.

The spelling of 9789739868736 in words is "nine trillion, seven hundred eighty-nine billion, seven hundred thirty-nine million, eight hundred sixty-eight thousand, seven hundred thirty-six".