408105193 has 2 divisors, whose sum is σ = 408105194. Its totient is φ = 408105192.

The previous prime is 408105163. The next prime is 408105209. The reversal of 408105193 is 391501804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 338081769 + 70023424 = 18387^2 + 8368^2 .

It is a cyclic number.

It is not a de Polignac number, because 408105193 - 2⁹ = 408104681 is a prime.

It is not a weakly prime, because it can be changed into another prime (408105163) 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, 204052596 + 204052597.

It is an arithmetic number, because the mean of its divisors is an integer number (204052597).

Almost surely, 2^408105193 is an apocalyptic number.

It is an amenable number.

408105193 is a deficient number, since it is larger than the sum of its proper divisors (1).

408105193 is an equidigital number, since it uses as much as digits as its factorization.

408105193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 408105193 is about 20201.6136236688. The cubic root of 408105193 is about 741.7496903453.

Adding to 408105193 its reverse (391501804), we get a palindrome (799606997).

The spelling of 408105193 in words is "four hundred eight million, one hundred five thousand, one hundred ninety-three".