9997937 has 2 divisors, whose sum is σ = 9997938.
Its totient is φ = 9997936.
The previous prime is 9997927. The next prime is 9997951. The reversal of 9997937 is 7397999.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 7311616 + 2686321 = 2704^2 + 1639^2
It is a cyclic number.
It is not a de Polignac number, because 9997937 - 26 = 9997873 is a prime.
It is not a weakly prime, because it can be changed into another prime (9997927) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4998968 + 4998969.
It is an arithmetic number, because the mean of its divisors is an integer number (4998969).
Almost surely, 29997937 is an apocalyptic number.
It is an amenable number.
9997937 is a deficient number, since it is larger than the sum of its proper divisors (1).
9997937 is an equidigital number, since it uses as much as digits as its factorization.
9997937 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 964467, while the sum is 53.
The square root of 9997937 is about 3161.9514544028.
The cubic root of 9997937 is about 215.4286526551.
The spelling of 9997937 in words is "nine million, nine hundred ninety-seven thousand, nine hundred thirty-seven".