804712905 has 24 divisors (see below), whose sum is σ = 1395755712. Its totient is φ = 428897184.

The previous prime is 804712903. The next prime is 804712913. The reversal of 804712905 is 509217408.

It is not a de Polignac number, because 804712905 - 2¹ = 804712903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 804712905.

It is not an unprimeable number, because it can be changed into a prime (804712903) 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, 75412 + ... + 85418.

It is an arithmetic number, because the mean of its divisors is an integer number (58156488).

Almost surely, 2^804712905 is an apocalyptic number.

It is an amenable number.

804712905 is a deficient number, since it is larger than the sum of its proper divisors (591042807).

804712905 is a wasteful number, since it uses less digits than its factorization.

804712905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11805 (or 11802 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 804712905 is about 28367.4620824634. The cubic root of 804712905 is about 930.1371459206.

The spelling of 804712905 in words is "eight hundred four million, seven hundred twelve thousand, nine hundred five".