808404469 has 2 divisors, whose sum is σ = 808404470. Its totient is φ = 808404468.

The previous prime is 808404439. The next prime is 808404473. The reversal of 808404469 is 964404808.

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., 621754225 + 186650244 = 24935^2 + 13662^2 .

It is a cyclic number.

It is not a de Polignac number, because 808404469 - 2²¹ = 806307317 is a prime.

It is a super-2 number, since 2×808404469² = 1307035570998343922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (808404439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404202234 + 404202235.

It is an arithmetic number, because the mean of its divisors is an integer number (404202235).

Almost surely, 2^808404469 is an apocalyptic number.

It is an amenable number.

808404469 is a deficient number, since it is larger than the sum of its proper divisors (1).

808404469 is an equidigital number, since it uses as much as digits as its factorization.

808404469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 808404469 is about 28432.4545018540. The cubic root of 808404469 is about 931.5572894952.

The spelling of 808404469 in words is "eight hundred eight million, four hundred four thousand, four hundred sixty-nine".