404204197 has 2 divisors, whose sum is σ = 404204198. Its totient is φ = 404204196.

The previous prime is 404204167. The next prime is 404204263. The reversal of 404204197 is 791402404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 332734081 + 71470116 = 18241^2 + 8454^2 .

It is a cyclic number.

It is not a de Polignac number, because 404204197 - 2¹⁵ = 404171429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404204137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202102098 + 202102099.

It is an arithmetic number, because the mean of its divisors is an integer number (202102099).

Almost surely, 2^404204197 is an apocalyptic number.

It is an amenable number.

404204197 is a deficient number, since it is larger than the sum of its proper divisors (1).

404204197 is an equidigital number, since it uses as much as digits as its factorization.

404204197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 404204197 is about 20104.8301907775. The cubic root of 404204197 is about 739.3787072739.

The spelling of 404204197 in words is "four hundred four million, two hundred four thousand, one hundred ninety-seven".