404420323 has 4 divisors (see below), whose sum is σ = 415350640. Its totient is φ = 393490008.

The previous prime is 404420311. The next prime is 404420329. The reversal of 404420323 is 323024404.

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 404420323 - 2⁹ = 404419811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404420294 and 404420303.

It is not an unprimeable number, because it can be changed into a prime (404420329) 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, 5465103 + ... + 5465176.

It is an arithmetic number, because the mean of its divisors is an integer number (103837660).

Almost surely, 2^404420323 is an apocalyptic number.

404420323 is a deficient number, since it is larger than the sum of its proper divisors (10930317).

404420323 is a wasteful number, since it uses less digits than its factorization.

404420323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10930316.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 404420323 is about 20110.2044494829. The cubic root of 404420323 is about 739.5104645151.

Adding to 404420323 its reverse (323024404), we get a palindrome (727444727).

The spelling of 404420323 in words is "four hundred four million, four hundred twenty thousand, three hundred twenty-three".