804997172 has 12 divisors (see below), whose sum is σ = 1609994400. Its totient is φ = 344998776.

The previous prime is 804997159. The next prime is 804997177. The reversal of 804997172 is 271799408.

804997172 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804997177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14374922 + ... + 14374977.

It is an arithmetic number, because the mean of its divisors is an integer number (134166200).

Almost surely, 2^804997172 is an apocalyptic number.

It is an amenable number.

804997172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

804997172 is a wasteful number, since it uses less digits than its factorization.

804997172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28749910 (or 28749908 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 804997172 is about 28372.4720812269. The cubic root of 804997172 is about 930.2466575102.

The spelling of 804997172 in words is "eight hundred four million, nine hundred ninety-seven thousand, one hundred seventy-two".