800291321 has 4 divisors (see below), whose sum is σ = 801024612. Its totient is φ = 799558032.

The previous prime is 800291299. The next prime is 800291347. The reversal of 800291321 is 123192008.

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 653518096 + 146773225 = 25564^2 + 12115^2 .

It is a cyclic number.

It is not a de Polignac number, because 800291321 - 2¹⁰ = 800290297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (800291521) 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, 365006 + ... + 367191.

It is an arithmetic number, because the mean of its divisors is an integer number (200256153).

Almost surely, 2^800291321 is an apocalyptic number.

It is an amenable number.

800291321 is a deficient number, since it is larger than the sum of its proper divisors (733291).

800291321 is a wasteful number, since it uses less digits than its factorization.

800291321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733290.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 800291321 is about 28289.4206550788. The cubic root of 800291321 is about 928.4304357392.

The spelling of 800291321 in words is "eight hundred million, two hundred ninety-one thousand, three hundred twenty-one".