404203361 has 2 divisors, whose sum is σ = 404203362. Its totient is φ = 404203360.

The previous prime is 404203343. The next prime is 404203381. The reversal of 404203361 is 163302404.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 397603600 + 6599761 = 19940^2 + 2569^2 .

It is a cyclic number.

It is not a de Polignac number, because 404203361 - 2¹⁴ = 404186977 is a prime.

It is not a weakly prime, because it can be changed into another prime (404203381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202101680 + 202101681.

It is an arithmetic number, because the mean of its divisors is an integer number (202101681).

Almost surely, 2^404203361 is an apocalyptic number.

It is an amenable number.

404203361 is a deficient number, since it is larger than the sum of its proper divisors (1).

404203361 is an equidigital number, since it uses as much as digits as its factorization.

404203361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 404203361 is about 20104.8093997431. The cubic root of 404203361 is about 739.3781975307.

Adding to 404203361 its reverse (163302404), we get a palindrome (567505765).

The spelling of 404203361 in words is "four hundred four million, two hundred three thousand, three hundred sixty-one".