408471667 has 2 divisors, whose sum is σ = 408471668. Its totient is φ = 408471666.

The previous prime is 408471659. The next prime is 408471673. The reversal of 408471667 is 766174804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 408471667 - 2³ = 408471659 is a prime.

It is not a weakly prime, because it can be changed into another prime (408471607) 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, 204235833 + 204235834.

It is an arithmetic number, because the mean of its divisors is an integer number (204235834).

Almost surely, 2^408471667 is an apocalyptic number.

408471667 is a deficient number, since it is larger than the sum of its proper divisors (1).

408471667 is an equidigital number, since it uses as much as digits as its factorization.

408471667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 408471667 is about 20210.6820023472. The cubic root of 408471667 is about 741.9716516222.

The spelling of 408471667 in words is "four hundred eight million, four hundred seventy-one thousand, six hundred sixty-seven".