404596609 has 2 divisors, whose sum is σ = 404596610. Its totient is φ = 404596608.

The previous prime is 404596579. The next prime is 404596627. The reversal of 404596609 is 906695404.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 375274384 + 29322225 = 19372^2 + 5415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404596609 is a prime.

It is not a weakly prime, because it can be changed into another prime (404596679) 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, 202298304 + 202298305.

It is an arithmetic number, because the mean of its divisors is an integer number (202298305).

Almost surely, 2^404596609 is an apocalyptic number.

It is an amenable number.

404596609 is a deficient number, since it is larger than the sum of its proper divisors (1).

404596609 is an equidigital number, since it uses as much as digits as its factorization.

404596609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 404596609 is about 20114.5869706539. The cubic root of 404596609 is about 739.6178992778.

The spelling of 404596609 in words is "four hundred four million, five hundred ninety-six thousand, six hundred nine".