9729404143 has 2 divisors, whose sum is σ = 9729404144. Its totient is φ = 9729404142.

The previous prime is 9729404071. The next prime is 9729404173. The reversal of 9729404143 is 3414049279.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9729404143 is a prime.

It is a super-2 number, since 2×9729404143² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9729404143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9729404173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4864702071 + 4864702072.

It is an arithmetic number, because the mean of its divisors is an integer number (4864702072).

Almost surely, 2^9729404143 is an apocalyptic number.

9729404143 is a deficient number, since it is larger than the sum of its proper divisors (1).

9729404143 is an equidigital number, since it uses as much as digits as its factorization.

9729404143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 9729404143 is about 98637.7419804407. The cubic root of 9729404143 is about 2134.8240228492.

The spelling of 9729404143 in words is "nine billion, seven hundred twenty-nine million, four hundred four thousand, one hundred forty-three".