404495593 has 2 divisors, whose sum is σ = 404495594. Its totient is φ = 404495592.

The previous prime is 404495587. The next prime is 404495633. The reversal of 404495593 is 395594404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 370062169 + 34433424 = 19237^2 + 5868^2 .

It is a cyclic number.

It is not a de Polignac number, because 404495593 - 2⁵ = 404495561 is a prime.

It is not a weakly prime, because it can be changed into another prime (404495513) 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, 202247796 + 202247797.

It is an arithmetic number, because the mean of its divisors is an integer number (202247797).

Almost surely, 2^404495593 is an apocalyptic number.

It is an amenable number.

404495593 is a deficient number, since it is larger than the sum of its proper divisors (1).

404495593 is an equidigital number, since it uses as much as digits as its factorization.

404495593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 43.

The square root of 404495593 is about 20112.0758003743. The cubic root of 404495593 is about 739.5563404653.

The spelling of 404495593 in words is "four hundred four million, four hundred ninety-five thousand, five hundred ninety-three".