804287321 has 4 divisors (see below), whose sum is σ = 806103312. Its totient is φ = 802471332.

The previous prime is 804287311. The next prime is 804287327. The reversal of 804287321 is 123782408.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 804287321 - 2¹⁴ = 804270937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (804287327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 907331 + ... + 908216.

It is an arithmetic number, because the mean of its divisors is an integer number (201525828).

Almost surely, 2^804287321 is an apocalyptic number.

It is an amenable number.

804287321 is a deficient number, since it is larger than the sum of its proper divisors (1815991).

804287321 is a wasteful number, since it uses less digits than its factorization.

804287321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815990.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 804287321 is about 28359.9598201408. The cubic root of 804287321 is about 929.9731448676.

The spelling of 804287321 in words is "eight hundred four million, two hundred eighty-seven thousand, three hundred twenty-one".