809519472 has 60 divisors (see below), whose sum is σ = 2384776680. Its totient is φ = 255636864.

The previous prime is 809519467. The next prime is 809519479. The reversal of 809519472 is 274915908.

809519472 is a `hidden beast` number, since 80 + 95 + 19 + 472 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809519479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145203 + ... + 150674.

It is an arithmetic number, because the mean of its divisors is an integer number (39746278).

Almost surely, 2^809519472 is an apocalyptic number.

It is an amenable number.

809519472 is an abundant number, since it is smaller than the sum of its proper divisors (1575257208).

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

809519472 is a wasteful number, since it uses less digits than its factorization.

809519472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295910 (or 295901 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 809519472 is about 28452.0556726575. The cubic root of 809519472 is about 931.9853804801.

The spelling of 809519472 in words is "eight hundred nine million, five hundred nineteen thousand, four hundred seventy-two".