396860897 has 2 divisors, whose sum is σ = 396860898. Its totient is φ = 396860896.

The previous prime is 396860881. The next prime is 396860909. The reversal of 396860897 is 798068693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 321449041 + 75411856 = 17929^2 + 8684^2 .

It is an emirp because it is prime and its reverse (798068693) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 396860897 - 2⁴ = 396860881 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (396862897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198430448 + 198430449.

It is an arithmetic number, because the mean of its divisors is an integer number (198430449).

Almost surely, 2^396860897 is an apocalyptic number.

It is an amenable number.

396860897 is a deficient number, since it is larger than the sum of its proper divisors (1).

396860897 is an equidigital number, since it uses as much as digits as its factorization.

396860897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The square root of 396860897 is about 19921.3678496232. The cubic root of 396860897 is about 734.8738099185.

The spelling of 396860897 in words is "three hundred ninety-six million, eight hundred sixty thousand, eight hundred ninety-seven".