800040321 has 28 divisors (see below), whose sum is σ = 1206409680. Its totient is φ = 530294040.

The previous prime is 800040317. The next prime is 800040331. The reversal of 800040321 is 123040008.

It is a happy number.

It is not a de Polignac number, because 800040321 - 2² = 800040317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 800040294 and 800040303.

It is not an unprimeable number, because it can be changed into a prime (800040301) 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 27 ways as a sum of consecutive naturals, for example, 127426 + ... + 133556.

It is an arithmetic number, because the mean of its divisors is an integer number (43086060).

Almost surely, 2^800040321 is an apocalyptic number.

800040321 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

800040321 is a deficient number, since it is larger than the sum of its proper divisors (406369359).

800040321 is an equidigital number, since it uses as much as digits as its factorization.

800040321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6328 (or 6313 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 800040321 is about 28284.9840197940. The cubic root of 800040321 is about 928.3333625858. Note that the first 4 decimals are identical.

Adding to 800040321 its reverse (123040008), we get a palindrome (923080329).

The spelling of 800040321 in words is "eight hundred million, forty thousand, three hundred twenty-one".