404670665489 has 2 divisors, whose sum is σ = 404670665490. Its totient is φ = 404670665488.

The previous prime is 404670665467. The next prime is 404670665533. The reversal of 404670665489 is 984566076404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299419084864 + 105251580625 = 547192^2 + 324425^2 .

It is a cyclic number.

It is not a de Polignac number, because 404670665489 - 2⁸ = 404670665233 is a prime.

It is not a weakly prime, because it can be changed into another prime (404670665459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202335332744 + 202335332745.

It is an arithmetic number, because the mean of its divisors is an integer number (202335332745).

Almost surely, 2^404670665489 is an apocalyptic number.

It is an amenable number.

404670665489 is a deficient number, since it is larger than the sum of its proper divisors (1).

404670665489 is an equidigital number, since it uses as much as digits as its factorization.

404670665489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34836480, while the sum is 59.

The spelling of 404670665489 in words is "four hundred four billion, six hundred seventy million, six hundred sixty-five thousand, four hundred eighty-nine".