9937997 has 2 divisors, whose sum is σ = 9937998. Its totient is φ = 9937996.

The previous prime is 9937973. The next prime is 9938017. The reversal of 9937997 is 7997399.

9937997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6482116 + 3455881 = 2546^2 + 1859^2 .

It is a cyclic number.

It is not a de Polignac number, because 9937997 - 2¹⁰ = 9936973 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9937927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4968998 + 4968999.

It is an arithmetic number, because the mean of its divisors is an integer number (4968999).

Almost surely, 2^9937997 is an apocalyptic number.

It is an amenable number.

9937997 is a deficient number, since it is larger than the sum of its proper divisors (1).

9937997 is an equidigital number, since it uses as much as digits as its factorization.

9937997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 964467, while the sum is 53.

The square root of 9937997 is about 3152.4588815717. The cubic root of 9937997 is about 214.9972741677.

The spelling of 9937997 in words is "nine million, nine hundred thirty-seven thousand, nine hundred ninety-seven".