404295800809 has 2 divisors, whose sum is σ = 404295800810. Its totient is φ = 404295800808.

The previous prime is 404295800803. The next prime is 404295800879. The reversal of 404295800809 is 908008592404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 402713352409 + 1582448400 = 634597^2 + 39780^2 .

It is a cyclic number.

It is not a de Polignac number, because 404295800809 - 2¹⁹ = 404295276521 is a prime.

It is not a weakly prime, because it can be changed into another prime (404295800803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202147900404 + 202147900405.

It is an arithmetic number, because the mean of its divisors is an integer number (202147900405).

Almost surely, 2^404295800809 is an apocalyptic number.

It is an amenable number.

404295800809 is a deficient number, since it is larger than the sum of its proper divisors (1).

404295800809 is an equidigital number, since it uses as much as digits as its factorization.

404295800809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 49.

The spelling of 404295800809 in words is "four hundred four billion, two hundred ninety-five million, eight hundred thousand, eight hundred nine".