404340241 has 2 divisors, whose sum is σ = 404340242. Its totient is φ = 404340240.

The previous prime is 404340229. The next prime is 404340247. The reversal of 404340241 is 142043404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 245580241 + 158760000 = 15671^2 + 12600^2 .

It is a cyclic number.

It is not a de Polignac number, because 404340241 - 2⁷ = 404340113 is a prime.

It is not a weakly prime, because it can be changed into another prime (404340247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202170120 + 202170121.

It is an arithmetic number, because the mean of its divisors is an integer number (202170121).

Almost surely, 2^404340241 is an apocalyptic number.

It is an amenable number.

404340241 is a deficient number, since it is larger than the sum of its proper divisors (1).

404340241 is an equidigital number, since it uses as much as digits as its factorization.

404340241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 404340241 is about 20108.2132721930. The cubic root of 404340241 is about 739.4616494721.

Adding to 404340241 its reverse (142043404), we get a palindrome (546383645).

The spelling of 404340241 in words is "four hundred four million, three hundred forty thousand, two hundred forty-one".