405430111 has 2 divisors, whose sum is σ = 405430112. Its totient is φ = 405430110.

The previous prime is 405430087. The next prime is 405430141. The reversal of 405430111 is 111034504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405430111 - 2⁵ = 405430079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405430141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202715055 + 202715056.

It is an arithmetic number, because the mean of its divisors is an integer number (202715056).

Almost surely, 2^405430111 is an apocalyptic number.

405430111 is a deficient number, since it is larger than the sum of its proper divisors (1).

405430111 is an equidigital number, since it uses as much as digits as its factorization.

405430111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 405430111 is about 20135.2951555223. The cubic root of 405430111 is about 740.1254419679.

Adding to 405430111 its reverse (111034504), we get a palindrome (516464615).

The spelling of 405430111 in words is "four hundred five million, four hundred thirty thousand, one hundred eleven".