9888397 has 2 divisors, whose sum is σ = 9888398. Its totient is φ = 9888396.

The previous prime is 9888353. The next prime is 9888443. The reversal of 9888397 is 7938889.

9888397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5248681 + 4639716 = 2291^2 + 2154^2 .

It is a cyclic number.

It is not a de Polignac number, because 9888397 - 2⁷ = 9888269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9888317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4944198 + 4944199.

It is an arithmetic number, because the mean of its divisors is an integer number (4944199).

Almost surely, 2^9888397 is an apocalyptic number.

It is an amenable number.

9888397 is a deficient number, since it is larger than the sum of its proper divisors (1).

9888397 is an equidigital number, since it uses as much as digits as its factorization.

9888397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 52.

The square root of 9888397 is about 3144.5821662027. The cubic root of 9888397 is about 214.6389975762.

The spelling of 9888397 in words is "nine million, eight hundred eighty-eight thousand, three hundred ninety-seven".