804147481 has 4 divisors (see below), whose sum is σ = 851450292. Its totient is φ = 756844672.

The previous prime is 804147451. The next prime is 804147517. The reversal of 804147481 is 184741408.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 462637081 + 341510400 = 21509^2 + 18480^2 .

It is a cyclic number.

It is not a de Polignac number, because 804147481 - 2⁷ = 804147353 is a prime.

It is a super-2 number, since 2×804147481² = 1293306342397290722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 804147481.

It is not an unprimeable number, because it can be changed into a prime (804147451) 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, 23651380 + ... + 23651413.

It is an arithmetic number, because the mean of its divisors is an integer number (212862573).

Almost surely, 2^804147481 is an apocalyptic number.

It is an amenable number.

804147481 is a deficient number, since it is larger than the sum of its proper divisors (47302811).

804147481 is a wasteful number, since it uses less digits than its factorization.

804147481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47302810.

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 804147481 is about 28357.4942651850. The cubic root of 804147481 is about 929.9192441537.

Adding to 804147481 its reverse (184741408), we get a palindrome (988888889).

The spelling of 804147481 in words is "eight hundred four million, one hundred forty-seven thousand, four hundred eighty-one".