9397455787729 has 9 divisors (see below), whose sum is σ = 9428726399131. Its totient is φ = 9366288574720.

The previous prime is 9397455787721. The next prime is 9397455787739. The reversal of 9397455787729 is 9277875547939.

The square root of 9397455787729 is 3065527.

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

It can be written as a sum of positive squares in only one way, i.e., 3464567982225 + 5932887805504 = 1861335^2 + 2435752^2 .

It is not a de Polignac number, because 9397455787729 - 2³ = 9397455787721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9397455787721) 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, 953373969 + ... + 953383825.

Almost surely, 2^{9397455787729} is an apocalyptic number.

9397455787729 is the 3065527-th square number.

9397455787729 is the 1532764-th centered octagonal number.

It is an amenable number.

9397455787729 is a deficient number, since it is larger than the sum of its proper divisors (31270611402).

9397455787729 is an frugal number, since it uses more digits than its factorization.

9397455787729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20336 (or 10168 counting only the distinct ones).

The product of its digits is 8401579200, while the sum is 82.

The spelling of 9397455787729 in words is "nine trillion, three hundred ninety-seven billion, four hundred fifty-five million, seven hundred eighty-seven thousand, seven hundred twenty-nine".