9937649 has 2 divisors, whose sum is σ = 9937650. Its totient is φ = 9937648.

The previous prime is 9937637. The next prime is 9937661. The reversal of 9937649 is 9467399.

It is a balanced prime because it is at equal distance from previous prime (9937637) and next prime (9937661).

It can be written as a sum of positive squares in only one way, i.e., 6927424 + 3010225 = 2632^2 + 1735^2 .

It is an emirp because it is prime and its reverse (9467399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9937649 - 2¹⁶ = 9872113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9937699) 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, 4968824 + 4968825.

It is an arithmetic number, because the mean of its divisors is an integer number (4968825).

Almost surely, 2^9937649 is an apocalyptic number.

It is an amenable number.

9937649 is a deficient number, since it is larger than the sum of its proper divisors (1).

9937649 is an equidigital number, since it uses as much as digits as its factorization.

9937649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 47.

The square root of 9937649 is about 3152.4036860783. The cubic root of 9937649 is about 214.9947646102.

The spelling of 9937649 in words is "nine million, nine hundred thirty-seven thousand, six hundred forty-nine".