9957247 has 2 divisors, whose sum is σ = 9957248. Its totient is φ = 9957246.

The previous prime is 9957203. The next prime is 9957251. The reversal of 9957247 is 7427599.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9957247 - 2¹¹ = 9955199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9957047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4978623 + 4978624.

It is an arithmetic number, because the mean of its divisors is an integer number (4978624).

Almost surely, 2^9957247 is an apocalyptic number.

9957247 is a deficient number, since it is larger than the sum of its proper divisors (1).

9957247 is an equidigital number, since it uses as much as digits as its factorization.

9957247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 43.

The square root of 9957247 is about 3155.5105767530. The cubic root of 9957247 is about 215.1360019270.

The spelling of 9957247 in words is "nine million, nine hundred fifty-seven thousand, two hundred forty-seven".