7947013 has 2 divisors, whose sum is σ = 7947014. Its totient is φ = 7947012.

The previous prime is 7947011. The next prime is 7947053. The reversal of 7947013 is 3107497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7059649 + 887364 = 2657^2 + 942^2 .

It is an emirp because it is prime and its reverse (3107497) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7947013 - 2¹ = 7947011 is a prime.

Together with 7947011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7947011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3973506 + 3973507.

It is an arithmetic number, because the mean of its divisors is an integer number (3973507).

Almost surely, 2^7947013 is an apocalyptic number.

It is an amenable number.

7947013 is a deficient number, since it is larger than the sum of its proper divisors (1).

7947013 is an equidigital number, since it uses as much as digits as its factorization.

7947013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 7947013 is about 2819.0446963466. The cubic root of 7947013 is about 199.5574631948.

The spelling of 7947013 in words is "seven million, nine hundred forty-seven thousand, thirteen".