404845088209 has 2 divisors, whose sum is σ = 404845088210. Its totient is φ = 404845088208.

The previous prime is 404845088177. The next prime is 404845088261. The reversal of 404845088209 is 902880548404.

It is an a-pointer prime, because the next prime (404845088261) can be obtained adding 404845088209 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 270995207184 + 133849881025 = 520572^2 + 365855^2 .

It is a cyclic number.

It is not a de Polignac number, because 404845088209 - 2⁵ = 404845088177 is a prime.

It is not a weakly prime, because it can be changed into another prime (404849088209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202422544104 + 202422544105.

It is an arithmetic number, because the mean of its divisors is an integer number (202422544105).

Almost surely, 2^404845088209 is an apocalyptic number.

It is an amenable number.

404845088209 is a deficient number, since it is larger than the sum of its proper divisors (1).

404845088209 is an equidigital number, since it uses as much as digits as its factorization.

404845088209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2949120, while the sum is 52.

The spelling of 404845088209 in words is "four hundred four billion, eight hundred forty-five million, eighty-eight thousand, two hundred nine".