397200017 has 2 divisors, whose sum is σ = 397200018. Its totient is φ = 397200016.

The previous prime is 397199953. The next prime is 397200059. The reversal of 397200017 is 710002793.

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., 219750976 + 177449041 = 14824^2 + 13321^2 .

It is a cyclic number.

It is not a de Polignac number, because 397200017 - 2⁶ = 397199953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (397200077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198600008 + 198600009.

It is an arithmetic number, because the mean of its divisors is an integer number (198600009).

Almost surely, 2^397200017 is an apocalyptic number.

It is an amenable number.

397200017 is a deficient number, since it is larger than the sum of its proper divisors (1).

397200017 is an equidigital number, since it uses as much as digits as its factorization.

397200017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 397200017 is about 19929.8774958603. The cubic root of 397200017 is about 735.0830683414.

The spelling of 397200017 in words is "three hundred ninety-seven million, two hundred thousand, seventeen".