9740257 has 2 divisors, whose sum is σ = 9740258. Its totient is φ = 9740256.

The previous prime is 9740239. The next prime is 9740267. The reversal of 9740257 is 7520479.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6145441 + 3594816 = 2479^2 + 1896^2 .

It is an emirp because it is prime and its reverse (7520479) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9740257 is a prime.

It is not a weakly prime, because it can be changed into another prime (9740207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4870128 + 4870129.

It is an arithmetic number, because the mean of its divisors is an integer number (4870129).

Almost surely, 2^9740257 is an apocalyptic number.

It is an amenable number.

9740257 is a deficient number, since it is larger than the sum of its proper divisors (1).

9740257 is an equidigital number, since it uses as much as digits as its factorization.

9740257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 9740257 is about 3120.9384806497. The cubic root of 9740257 is about 213.5617505166.

The spelling of 9740257 in words is "nine million, seven hundred forty thousand, two hundred fifty-seven".