7939853797 has 2 divisors, whose sum is σ = 7939853798. Its totient is φ = 7939853796.

The previous prime is 7939853771. The next prime is 7939853813. The reversal of 7939853797 is 7973589397.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7501118881 + 438734916 = 86609^2 + 20946^2 .

It is a cyclic number.

It is not a de Polignac number, because 7939853797 - 2²³ = 7931465189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7939853707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3969926898 + 3969926899.

It is an arithmetic number, because the mean of its divisors is an integer number (3969926899).

Almost surely, 2^7939853797 is an apocalyptic number.

It is an amenable number.

7939853797 is a deficient number, since it is larger than the sum of its proper divisors (1).

7939853797 is an equidigital number, since it uses as much as digits as its factorization.

7939853797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90016920, while the sum is 67.

The square root of 7939853797 is about 89105.8572541671. The cubic root of 7939853797 is about 1994.9752026951.

The spelling of 7939853797 in words is "seven billion, nine hundred thirty-nine million, eight hundred fifty-three thousand, seven hundred ninety-seven".