397100017 has 2 divisors, whose sum is σ = 397100018. Its totient is φ = 397100016.

The previous prime is 397099993. The next prime is 397100027. The reversal of 397100017 is 710001793.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 395572321 + 1527696 = 19889^2 + 1236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397100017 is a prime.

It is not a weakly prime, because it can be changed into another prime (397100027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198550008 + 198550009.

It is an arithmetic number, because the mean of its divisors is an integer number (198550009).

Almost surely, 2^397100017 is an apocalyptic number.

It is an amenable number.

397100017 is a deficient number, since it is larger than the sum of its proper divisors (1).

397100017 is an equidigital number, since it uses as much as digits as its factorization.

397100017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1323, while the sum is 28.

The square root of 397100017 is about 19927.3685417819. The cubic root of 397100017 is about 735.0213744228.

The spelling of 397100017 in words is "three hundred ninety-seven million, one hundred thousand, seventeen".