9923897 has 2 divisors, whose sum is σ = 9923898. Its totient is φ = 9923896.

The previous prime is 9923891. The next prime is 9923899. The reversal of 9923897 is 7983299.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9834496 + 89401 = 3136^2 + 299^2 .

It is an emirp because it is prime and its reverse (7983299) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9923897 - 2¹⁰ = 9922873 is a prime.

Together with 9923899, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9923891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4961948 + 4961949.

It is an arithmetic number, because the mean of its divisors is an integer number (4961949).

Almost surely, 2^9923897 is an apocalyptic number.

It is an amenable number.

9923897 is a deficient number, since it is larger than the sum of its proper divisors (1).

9923897 is an equidigital number, since it uses as much as digits as its factorization.

9923897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 47.

The square root of 9923897 is about 3150.2217382273. The cubic root of 9923897 is about 214.8955468823.

The spelling of 9923897 in words is "nine million, nine hundred twenty-three thousand, eight hundred ninety-seven".