404388473 has 2 divisors, whose sum is σ = 404388474. Its totient is φ = 404388472.

The previous prime is 404388449. The next prime is 404388539. The reversal of 404388473 is 374883404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202407529 + 201980944 = 14227^2 + 14212^2 .

It is a cyclic number.

It is not a de Polignac number, because 404388473 - 2²⁸ = 135953017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404388473.

It is not a weakly prime, because it can be changed into another prime (404388433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202194236 + 202194237.

It is an arithmetic number, because the mean of its divisors is an integer number (202194237).

Almost surely, 2^404388473 is an apocalyptic number.

It is an amenable number.

404388473 is a deficient number, since it is larger than the sum of its proper divisors (1).

404388473 is an equidigital number, since it uses as much as digits as its factorization.

404388473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 41.

The square root of 404388473 is about 20109.4125473620. The cubic root of 404388473 is about 739.4910506979.

The spelling of 404388473 in words is "four hundred four million, three hundred eighty-eight thousand, four hundred seventy-three".