408378227 has 2 divisors, whose sum is σ = 408378228. Its totient is φ = 408378226.

The previous prime is 408378209. The next prime is 408378241. The reversal of 408378227 is 722873804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 408378227 - 2¹⁶ = 408312691 is a prime.

It is not a weakly prime, because it can be changed into another prime (408378427) 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, 204189113 + 204189114.

It is an arithmetic number, because the mean of its divisors is an integer number (204189114).

Almost surely, 2^408378227 is an apocalyptic number.

408378227 is a deficient number, since it is larger than the sum of its proper divisors (1).

408378227 is an equidigital number, since it uses as much as digits as its factorization.

408378227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150528, while the sum is 41.

The square root of 408378227 is about 20208.3702212722. The cubic root of 408378227 is about 741.9150706939.

The spelling of 408378227 in words is "four hundred eight million, three hundred seventy-eight thousand, two hundred twenty-seven".