405346441 has 2 divisors, whose sum is σ = 405346442. Its totient is φ = 405346440.

The previous prime is 405346397. The next prime is 405346477. The reversal of 405346441 is 144643504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391208841 + 14137600 = 19779^2 + 3760^2 .

It is a cyclic number.

It is not a de Polignac number, because 405346441 - 2⁹ = 405345929 is a prime.

It is not a weakly prime, because it can be changed into another prime (405346141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202673220 + 202673221.

It is an arithmetic number, because the mean of its divisors is an integer number (202673221).

Almost surely, 2^405346441 is an apocalyptic number.

It is an amenable number.

405346441 is a deficient number, since it is larger than the sum of its proper divisors (1).

405346441 is an equidigital number, since it uses as much as digits as its factorization.

405346441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 405346441 is about 20133.2173534187. The cubic root of 405346441 is about 740.0745243913.

Adding to 405346441 its reverse (144643504), we get a palindrome (549989945).

The spelling of 405346441 in words is "four hundred five million, three hundred forty-six thousand, four hundred forty-one".