9702729985 has 16 divisors (see below), whose sum is σ = 12552232896. Its totient is φ = 7157481408.

The previous prime is 9702729931. The next prime is 9702730001. The reversal of 9702729985 is 5899272079.

It is a cyclic number.

It is not a de Polignac number, because 9702729985 - 2¹⁹ = 9702205697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17259 + ... + 140368.

It is an arithmetic number, because the mean of its divisors is an integer number (784514556).

Almost surely, 2^9702729985 is an apocalyptic number.

It is an amenable number.

9702729985 is a deficient number, since it is larger than the sum of its proper divisors (2849502911).

9702729985 is a wasteful number, since it uses less digits than its factorization.

9702729985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158592.

The product of its (nonzero) digits is 5715360, while the sum is 58.

The square root of 9702729985 is about 98502.4364419480. The cubic root of 9702729985 is about 2132.8712909825.

The spelling of 9702729985 in words is "nine billion, seven hundred two million, seven hundred twenty-nine thousand, nine hundred eighty-five".