404663473 has 2 divisors, whose sum is σ = 404663474. Its totient is φ = 404663472.

The previous prime is 404663471. The next prime is 404663503. The reversal of 404663473 is 374366404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 256384144 + 148279329 = 16012^2 + 12177^2 .

It is a cyclic number.

It is not a de Polignac number, because 404663473 - 2¹ = 404663471 is a prime.

Together with 404663471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (404663471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202331736 + 202331737.

It is an arithmetic number, because the mean of its divisors is an integer number (202331737).

Almost surely, 2^404663473 is an apocalyptic number.

It is an amenable number.

404663473 is a deficient number, since it is larger than the sum of its proper divisors (1).

404663473 is an equidigital number, since it uses as much as digits as its factorization.

404663473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 37.

The square root of 404663473 is about 20116.2489793699. The cubic root of 404663473 is about 739.6586403404.

The spelling of 404663473 in words is "four hundred four million, six hundred sixty-three thousand, four hundred seventy-three".