804905431 has 24 divisors (see below), whose sum is σ = 906004512. Its totient is φ = 714331200.

The previous prime is 804905383. The next prime is 804905473. The reversal of 804905431 is 134509408.

It is not a de Polignac number, because 804905431 - 2¹¹ = 804903383 is a prime.

It is a super-2 number, since 2×804905431² = 1295745505706591522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804905831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1232301 + ... + 1232953.

It is an arithmetic number, because the mean of its divisors is an integer number (37750188).

Almost surely, 2^804905431 is an apocalyptic number.

804905431 is a deficient number, since it is larger than the sum of its proper divisors (101099081).

804905431 is a wasteful number, since it uses less digits than its factorization.

804905431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903 (or 892 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 804905431 is about 28370.8553096307. The cubic root of 804905431 is about 930.2113178412.

The spelling of 804905431 in words is "eight hundred four million, nine hundred five thousand, four hundred thirty-one".