9897071 has 2 divisors, whose sum is σ = 9897072. Its totient is φ = 9897070.

The previous prime is 9897059. The next prime is 9897109. The reversal of 9897071 is 1707989.

9897071 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9897071 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9897001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4948535 + 4948536.

It is an arithmetic number, because the mean of its divisors is an integer number (4948536).

Almost surely, 2^9897071 is an apocalyptic number.

9897071 is a deficient number, since it is larger than the sum of its proper divisors (1).

9897071 is an equidigital number, since it uses as much as digits as its factorization.

9897071 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 9897071 is about 3145.9610614246. The cubic root of 9897071 is about 214.7017389403.

The spelling of 9897071 in words is "nine million, eight hundred ninety-seven thousand, seventy-one".