408144673 has 2 divisors, whose sum is σ = 408144674. Its totient is φ = 408144672.

The previous prime is 408144661. The next prime is 408144677. The reversal of 408144673 is 376441804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 275825664 + 132319009 = 16608^2 + 11503^2 .

It is a cyclic number.

It is not a de Polignac number, because 408144673 - 2¹⁷ = 408013601 is a prime.

It is not a weakly prime, because it can be changed into another prime (408144677) 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, 204072336 + 204072337.

It is an arithmetic number, because the mean of its divisors is an integer number (204072337).

Almost surely, 2^408144673 is an apocalyptic number.

It is an amenable number.

408144673 is a deficient number, since it is larger than the sum of its proper divisors (1).

408144673 is an equidigital number, since it uses as much as digits as its factorization.

408144673 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 408144673 is about 20202.5907497034. The cubic root of 408144673 is about 741.7736084707.

The spelling of 408144673 in words is "four hundred eight million, one hundred forty-four thousand, six hundred seventy-three".