9729981047 has 8 divisors (see below), whose sum is σ = 10125012480. Its totient is φ = 9342620280.

The previous prime is 9729981017. The next prime is 9729981049. The reversal of 9729981047 is 7401899279.

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

It is a cyclic number.

It is not a de Polignac number, because 9729981047 - 2²² = 9725786743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9729980983 and 9729981001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9729981049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1915079 + ... + 1920152.

It is an arithmetic number, because the mean of its divisors is an integer number (1265626560).

Almost surely, 2^9729981047 is an apocalyptic number.

9729981047 is a deficient number, since it is larger than the sum of its proper divisors (395031433).

9729981047 is a wasteful number, since it uses less digits than its factorization.

9729981047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3835333.

The product of its (nonzero) digits is 2286144, while the sum is 56.

The square root of 9729981047 is about 98640.6662943839. Note that the first 3 decimals coincide. The cubic root of 9729981047 is about 2134.8662167376.

The spelling of 9729981047 in words is "nine billion, seven hundred twenty-nine million, nine hundred eighty-one thousand, forty-seven".