9720038017 has 2 divisors, whose sum is σ = 9720038018. Its totient is φ = 9720038016.

The previous prime is 9720037949. The next prime is 9720038021. The reversal of 9720038017 is 7108300279.

9720038017 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6343963201 + 3376074816 = 79649^2 + 58104^2 .

It is a cyclic number.

It is not a de Polignac number, because 9720038017 - 2²⁷ = 9585820289 is a prime.

It is not a weakly prime, because it can be changed into another prime (9720038917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4860019008 + 4860019009.

It is an arithmetic number, because the mean of its divisors is an integer number (4860019009).

Almost surely, 2^9720038017 is an apocalyptic number.

It is an amenable number.

9720038017 is a deficient number, since it is larger than the sum of its proper divisors (1).

9720038017 is an equidigital number, since it uses as much as digits as its factorization.

9720038017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 9720038017 is about 98590.2531541531. The cubic root of 9720038017 is about 2134.1387650446.

The spelling of 9720038017 in words is "nine billion, seven hundred twenty million, thirty-eight thousand, seventeen".