804404404457 has 2 divisors, whose sum is σ = 804404404458. Its totient is φ = 804404404456.

The previous prime is 804404404399. The next prime is 804404404469. The reversal of 804404404457 is 754404404408.

804404404457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 804144421081 + 259983376 = 896741^2 + 16124^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-804404404457 is a prime.

It is not a weakly prime, because it can be changed into another prime (804404404957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402202202228 + 402202202229.

It is an arithmetic number, because the mean of its divisors is an integer number (402202202229).

Almost surely, 2^804404404457 is an apocalyptic number.

It is an amenable number.

804404404457 is a deficient number, since it is larger than the sum of its proper divisors (1).

804404404457 is an equidigital number, since it uses as much as digits as its factorization.

804404404457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1146880, while the sum is 44.

The spelling of 804404404457 in words is "eight hundred four billion, four hundred four million, four hundred four thousand, four hundred fifty-seven".