804242881 has 4 divisors (see below), whose sum is σ = 866107732. Its totient is φ = 742378032.

The previous prime is 804242869. The next prime is 804242899. The reversal of 804242881 is 188242408.

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 116964225 + 687278656 = 10815^2 + 26216^2 .

It is a cyclic number.

It is not a de Polignac number, because 804242881 - 2⁷ = 804242753 is a prime.

It is a super-2 number, since 2×804242881² = 1293613223278360322, 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 804242881.

It is not an unprimeable number, because it can be changed into a prime (804242801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30932406 + ... + 30932431.

It is an arithmetic number, because the mean of its divisors is an integer number (216526933).

Almost surely, 2^804242881 is an apocalyptic number.

It is an amenable number.

804242881 is a deficient number, since it is larger than the sum of its proper divisors (61864851).

804242881 is a wasteful number, since it uses less digits than its factorization.

804242881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61864850.

The product of its (nonzero) digits is 32768, while the sum is 37.

The square root of 804242881 is about 28359.1763103233. The cubic root of 804242881 is about 929.9560163420.

The spelling of 804242881 in words is "eight hundred four million, two hundred forty-two thousand, eight hundred eighty-one".