404321243 has 4 divisors (see below), whose sum is σ = 405282048. Its totient is φ = 403360440.

The previous prime is 404321233. The next prime is 404321263. The reversal of 404321243 is 342123404.

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

It is a cyclic number.

It is not a de Polignac number, because 404321243 - 2¹⁰ = 404320219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404321233) 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, 479771 + ... + 480612.

It is an arithmetic number, because the mean of its divisors is an integer number (101320512).

Almost surely, 2^404321243 is an apocalyptic number.

404321243 is a deficient number, since it is larger than the sum of its proper divisors (960805).

404321243 is an equidigital number, since it uses as much as digits as its factorization.

404321243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960804.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 404321243 is about 20107.7408726092. The cubic root of 404321243 is about 739.4500680439.

Adding to 404321243 its reverse (342123404), we get a palindrome (746444647).

The spelling of 404321243 in words is "four hundred four million, three hundred twenty-one thousand, two hundred forty-three".