9739495484021 has 2 divisors, whose sum is σ = 9739495484022. Its totient is φ = 9739495484020.

The previous prime is 9739495483979. The next prime is 9739495484029. The reversal of 9739495484021 is 1204845949379.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8730045262225 + 1009450221796 = 2954665^2 + 1004714^2 .

It is an emirp because it is prime and its reverse (1204845949379) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9739495484021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9739495484029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4869747742010 + 4869747742011.

It is an arithmetic number, because the mean of its divisors is an integer number (4869747742011).

Almost surely, 2^{9739495484021} is an apocalyptic number.

It is an amenable number.

9739495484021 is a deficient number, since it is larger than the sum of its proper divisors (1).

9739495484021 is an equidigital number, since it uses as much as digits as its factorization.

9739495484021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78382080, while the sum is 65.

The spelling of 9739495484021 in words is "nine trillion, seven hundred thirty-nine billion, four hundred ninety-five million, four hundred eighty-four thousand, twenty-one".