9947071 has 2 divisors, whose sum is σ = 9947072. Its totient is φ = 9947070.

The previous prime is 9947039. The next prime is 9947101. The reversal of 9947071 is 1707499.

It is a strong prime.

It is an emirp because it is prime and its reverse (1707499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9947071 - 2⁵ = 9947039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9947071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9947011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4973535 + 4973536.

It is an arithmetic number, because the mean of its divisors is an integer number (4973536).

Almost surely, 2^9947071 is an apocalyptic number.

9947071 is a deficient number, since it is larger than the sum of its proper divisors (1).

9947071 is an equidigital number, since it uses as much as digits as its factorization.

9947071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 9947071 is about 3153.8977472328. The cubic root of 9947071 is about 215.0626894892.

The spelling of 9947071 in words is "nine million, nine hundred forty-seven thousand, seventy-one".