804459769 has 9 divisors (see below), whose sum is σ = 814888399. Its totient is φ = 794164000.

The previous prime is 804459751. The next prime is 804459779. The reversal of 804459769 is 967954408.

It is a happy number.

The square root of 804459769 is 28363.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 14175225 + 790284544 = 3765^2 + 28112^2 .

It is not a de Polignac number, because 804459769 - 2²³ = 796071161 is a prime.

It is a super-2 number, since 2×804459769² = 1294311039879066722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (804459709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3204894 + ... + 3205144.

Almost surely, 2^804459769 is an apocalyptic number.

804459769 is the 28363-rd square number.

804459769 is the 14182-nd centered octagonal number.

It is an amenable number.

804459769 is a deficient number, since it is larger than the sum of its proper divisors (10428630).

804459769 is an frugal number, since it uses more digits than its factorization.

804459769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 52.

The cubic root of 804459769 is about 930.0396055897.

The spelling of 804459769 in words is "eight hundred four million, four hundred fifty-nine thousand, seven hundred sixty-nine".