9729942445 has 8 divisors (see below), whose sum is σ = 11796301944. Its totient is φ = 7703706624.

The previous prime is 9729942403. The next prime is 9729942451. The reversal of 9729942445 is 5442499279.

9729942445 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 217061289 + 9512881156 = 14733^2 + 97534^2 .

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 9729942445 - 2¹⁹ = 9729418157 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 10030384 + ... + 10031353.

It is an arithmetic number, because the mean of its divisors is an integer number (1474537743).

Almost surely, 2^9729942445 is an apocalyptic number.

It is an amenable number.

9729942445 is a deficient number, since it is larger than the sum of its proper divisors (2066359499).

9729942445 is a wasteful number, since it uses less digits than its factorization.

9729942445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20061839.

The product of its digits is 6531840, while the sum is 55.

The square root of 9729942445 is about 98640.4706243842. The cubic root of 9729942445 is about 2134.8633934976.

The spelling of 9729942445 in words is "nine billion, seven hundred twenty-nine million, nine hundred forty-two thousand, four hundred forty-five".