9897743 has 2 divisors, whose sum is σ = 9897744. Its totient is φ = 9897742.

The previous prime is 9897703. The next prime is 9897749. The reversal of 9897743 is 3477989.

9897743 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 strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9897743 - 2¹² = 9893647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9897749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4948871 + 4948872.

It is an arithmetic number, because the mean of its divisors is an integer number (4948872).

Almost surely, 2^9897743 is an apocalyptic number.

9897743 is a deficient number, since it is larger than the sum of its proper divisors (1).

9897743 is an equidigital number, since it uses as much as digits as its factorization.

9897743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 47.

The square root of 9897743 is about 3146.0678632223. The cubic root of 9897743 is about 214.7065981660.

The spelling of 9897743 in words is "nine million, eight hundred ninety-seven thousand, seven hundred forty-three".