408197 has 2 divisors, whose sum is σ = 408198. Its totient is φ = 408196.

The previous prime is 408173. The next prime is 408203. The reversal of 408197 is 791804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401956 + 6241 = 634^2 + 79^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-408197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (408127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204098 + 204099.

It is an arithmetic number, because the mean of its divisors is an integer number (204099).

2⁴⁰⁸¹⁹⁷ is an apocalyptic number.

It is an amenable number.

408197 is a deficient number, since it is larger than the sum of its proper divisors (1).

408197 is an equidigital number, since it uses as much as digits as its factorization.

408197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 408197 is about 638.9029660285. The cubic root of 408197 is about 74.1805307303.

The spelling of 408197 in words is "four hundred eight thousand, one hundred ninety-seven".