404448493 has 2 divisors, whose sum is σ = 404448494. Its totient is φ = 404448492.

The previous prime is 404448463. The next prime is 404448509. The reversal of 404448493 is 394844404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 400520169 + 3928324 = 20013^2 + 1982^2 .

It is a cyclic number.

It is not a de Polignac number, because 404448493 - 2⁵ = 404448461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404448403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202224246 + 202224247.

It is an arithmetic number, because the mean of its divisors is an integer number (202224247).

Almost surely, 2^404448493 is an apocalyptic number.

It is an amenable number.

404448493 is a deficient number, since it is larger than the sum of its proper divisors (1).

404448493 is an equidigital number, since it uses as much as digits as its factorization.

404448493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 221184, while the sum is 40.

The square root of 404448493 is about 20110.9048279783. The cubic root of 404448493 is about 739.5276343794.

The spelling of 404448493 in words is "four hundred four million, four hundred forty-eight thousand, four hundred ninety-three".