7859940013 has 2 divisors, whose sum is σ = 7859940014. Its totient is φ = 7859940012.

The previous prime is 7859939963. The next prime is 7859940031. The reversal of 7859940013 is 3100499587.

It is a happy number.

Together with next prime (7859940031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7012722564 + 847217449 = 83742^2 + 29107^2 .

It is an emirp because it is prime and its reverse (3100499587) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7859940013 - 2⁹ = 7859939501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7859940073) 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, 3929970006 + 3929970007.

It is an arithmetic number, because the mean of its divisors is an integer number (3929970007).

Almost surely, 2^7859940013 is an apocalyptic number.

It is an amenable number.

7859940013 is a deficient number, since it is larger than the sum of its proper divisors (1).

7859940013 is an equidigital number, since it uses as much as digits as its factorization.

7859940013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 7859940013 is about 88656.3027257510. The cubic root of 7859940013 is about 1988.2595501927.

The spelling of 7859940013 in words is "seven billion, eight hundred fifty-nine million, nine hundred forty thousand, thirteen".