396104209 has 2 divisors, whose sum is σ = 396104210. Its totient is φ = 396104208.

The previous prime is 396104207. The next prime is 396104213. The reversal of 396104209 is 902401693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 308775184 + 87329025 = 17572^2 + 9345^2 .

It is a cyclic number.

It is not a de Polignac number, because 396104209 - 2¹ = 396104207 is a prime.

Together with 396104207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (396104207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198052104 + 198052105.

It is an arithmetic number, because the mean of its divisors is an integer number (198052105).

Almost surely, 2^396104209 is an apocalyptic number.

It is an amenable number.

396104209 is a deficient number, since it is larger than the sum of its proper divisors (1).

396104209 is an equidigital number, since it uses as much as digits as its factorization.

396104209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 396104209 is about 19902.3669195400. The cubic root of 396104209 is about 734.4064555810.

The spelling of 396104209 in words is "three hundred ninety-six million, one hundred four thousand, two hundred nine".