408222667 has 2 divisors, whose sum is σ = 408222668. Its totient is φ = 408222666.

The previous prime is 408222637. The next prime is 408222671. The reversal of 408222667 is 766222804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 408222667 - 2¹¹ = 408220619 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (408222637) 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, 204111333 + 204111334.

It is an arithmetic number, because the mean of its divisors is an integer number (204111334).

Almost surely, 2^408222667 is an apocalyptic number.

408222667 is a deficient number, since it is larger than the sum of its proper divisors (1).

408222667 is an equidigital number, since it uses as much as digits as its factorization.

408222667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 408222667 is about 20204.5209544795. The cubic root of 408222667 is about 741.8208549577.

The spelling of 408222667 in words is "four hundred eight million, two hundred twenty-two thousand, six hundred sixty-seven".