9804397 has 2 divisors, whose sum is σ = 9804398. Its totient is φ = 9804396.

The previous prime is 9804391. The next prime is 9804409. The reversal of 9804397 is 7934089.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9326916 + 477481 = 3054^2 + 691^2 .

It is an emirp because it is prime and its reverse (7934089) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9804397 - 2⁷ = 9804269 is a prime.

It is a super-2 number, since 2×9804397² = 192252401067218, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9804391) 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, 4902198 + 4902199.

It is an arithmetic number, because the mean of its divisors is an integer number (4902199).

Almost surely, 2^9804397 is an apocalyptic number.

It is an amenable number.

9804397 is a deficient number, since it is larger than the sum of its proper divisors (1).

9804397 is an equidigital number, since it uses as much as digits as its factorization.

9804397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 9804397 is about 3131.1973748073. The cubic root of 9804397 is about 214.0294963273.

It can be divided in two parts, 9804 and 397, that added together give a palindrome (10201).

The spelling of 9804397 in words is "nine million, eight hundred four thousand, three hundred ninety-seven".