8709971 has 2 divisors, whose sum is σ = 8709972. Its totient is φ = 8709970.

The previous prime is 8709959. The next prime is 8709973. The reversal of 8709971 is 1799078.

8709971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8709971 is a prime.

It is a Sophie Germain prime.

Together with 8709973, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (8709973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4354985 + 4354986.

It is an arithmetic number, because the mean of its divisors is an integer number (4354986).

Almost surely, 2^8709971 is an apocalyptic number.

8709971 is a deficient number, since it is larger than the sum of its proper divisors (1).

8709971 is an equidigital number, since it uses as much as digits as its factorization.

8709971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 8709971 is about 2951.2659995331. The cubic root of 8709971 is about 205.7495542531.

The spelling of 8709971 in words is "eight million, seven hundred nine thousand, nine hundred seventy-one".