9729404135 has 16 divisors (see below), whose sum is σ = 12812954112. Its totient is φ = 7033552800.

The previous prime is 9729404071. The next prime is 9729404143. The reversal of 9729404135 is 5314049279.

9729404135 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9729404135 - 2⁶ = 9729404071 is a prime.

It is a super-2 number, since 2×9729404135² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 520451 + ... + 538820.

It is an arithmetic number, because the mean of its divisors is an integer number (800809632).

Almost surely, 2^9729404135 is an apocalyptic number.

9729404135 is a deficient number, since it is larger than the sum of its proper divisors (3083549977).

9729404135 is a wasteful number, since it uses less digits than its factorization.

9729404135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059454.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 9729404135 is about 98637.7419398883. The cubic root of 9729404135 is about 2134.8240222641.

The spelling of 9729404135 in words is "nine billion, seven hundred twenty-nine million, four hundred four thousand, one hundred thirty-five".