8331397 has 2 divisors, whose sum is σ = 8331398. Its totient is φ = 8331396.

The previous prime is 8331371. The next prime is 8331409. The reversal of 8331397 is 7931338.

8331397 is digitally balanced in base 3, 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., 8328996 + 2401 = 2886^2 + 49^2 .

It is a cyclic number.

It is not a de Polignac number, because 8331397 - 2⁷ = 8331269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8331307) 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, 4165698 + 4165699.

It is an arithmetic number, because the mean of its divisors is an integer number (4165699).

Almost surely, 2^8331397 is an apocalyptic number.

It is an amenable number.

8331397 is a deficient number, since it is larger than the sum of its proper divisors (1).

8331397 is an equidigital number, since it uses as much as digits as its factorization.

8331397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 34.

The square root of 8331397 is about 2886.4159436921. The cubic root of 8331397 is about 202.7243624088.

The spelling of 8331397 in words is "eight million, three hundred thirty-one thousand, three hundred ninety-seven".