7971939293 has 2 divisors, whose sum is σ = 7971939294. Its totient is φ = 7971939292.

The previous prime is 7971939257. The next prime is 7971939299. The reversal of 7971939293 is 3929391797.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3994492804 + 3977446489 = 63202^2 + 63067^2 .

It is a cyclic number.

It is not a de Polignac number, because 7971939293 - 2¹⁴ = 7971922909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7971939299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3985969646 + 3985969647.

It is an arithmetic number, because the mean of its divisors is an integer number (3985969647).

Almost surely, 2^7971939293 is an apocalyptic number.

It is an amenable number.

7971939293 is a deficient number, since it is larger than the sum of its proper divisors (1).

7971939293 is an equidigital number, since it uses as much as digits as its factorization.

7971939293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5786802, while the sum is 59.

The square root of 7971939293 is about 89285.7171836571. The cubic root of 7971939293 is about 1997.6588683706.

The spelling of 7971939293 in words is "seven billion, nine hundred seventy-one million, nine hundred thirty-nine thousand, two hundred ninety-three".