9728959943 has 2 divisors, whose sum is σ = 9728959944. Its totient is φ = 9728959942.

The previous prime is 9728959897. The next prime is 9728959979. The reversal of 9728959943 is 3499598279.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9728959943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9728959943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9728959343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4864479971 + 4864479972.

It is an arithmetic number, because the mean of its divisors is an integer number (4864479972).

Almost surely, 2^9728959943 is an apocalyptic number.

9728959943 is a deficient number, since it is larger than the sum of its proper divisors (1).

9728959943 is an equidigital number, since it uses as much as digits as its factorization.

9728959943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44089920, while the sum is 65.

The square root of 9728959943 is about 98635.4902811356. The cubic root of 9728959943 is about 2134.7915335947.

The spelling of 9728959943 in words is "nine billion, seven hundred twenty-eight million, nine hundred fifty-nine thousand, nine hundred forty-three".