9728039 has 2 divisors, whose sum is σ = 9728040. Its totient is φ = 9728038.

The previous prime is 9728027. The next prime is 9728051. The reversal of 9728039 is 9308279.

It is a balanced prime because it is at equal distance from previous prime (9728027) and next prime (9728051).

It is a cyclic number.

It is not a de Polignac number, because 9728039 - 2⁴ = 9728023 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 9727993 and 9728011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9728009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4864019 + 4864020.

It is an arithmetic number, because the mean of its divisors is an integer number (4864020).

Almost surely, 2^9728039 is an apocalyptic number.

9728039 is a deficient number, since it is larger than the sum of its proper divisors (1).

9728039 is an equidigital number, since it uses as much as digits as its factorization.

9728039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 9728039 is about 3118.9804423882. The cubic root of 9728039 is about 213.4724171706.

The spelling of 9728039 in words is "nine million, seven hundred twenty-eight thousand, thirty-nine".