9729729455 has 8 divisors (see below), whose sum is σ = 11791276704. Its totient is φ = 7706716000.

The previous prime is 9729729431. The next prime is 9729729473. The reversal of 9729729455 is 5549279279.

9729729455 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 9729729455 - 2¹⁰ = 9729728431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9729729394 and 9729729403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9632891 + ... + 9633900.

It is an arithmetic number, because the mean of its divisors is an integer number (1473909588).

Almost surely, 2^9729729455 is an apocalyptic number.

9729729455 is a deficient number, since it is larger than the sum of its proper divisors (2061547249).

9729729455 is a wasteful number, since it uses less digits than its factorization.

9729729455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19266897.

The product of its digits is 14288400, while the sum is 59.

The square root of 9729729455 is about 98639.3909906179. The cubic root of 9729729455 is about 2134.8478158833.

The spelling of 9729729455 in words is "nine billion, seven hundred twenty-nine million, seven hundred twenty-nine thousand, four hundred fifty-five".