404606443 has 4 divisors (see below), whose sum is σ = 428406840. Its totient is φ = 380806048.

The previous prime is 404606429. The next prime is 404606467. The reversal of 404606443 is 344606404.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404606443 is a prime.

It is a super-2 number, since 2×404606443² = 327412747434224498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404606243) 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 3 ways as a sum of consecutive naturals, for example, 11900173 + ... + 11900206.

It is an arithmetic number, because the mean of its divisors is an integer number (107101710).

Almost surely, 2^404606443 is an apocalyptic number.

404606443 is a deficient number, since it is larger than the sum of its proper divisors (23800397).

404606443 is a wasteful number, since it uses less digits than its factorization.

404606443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23800396.

The product of its (nonzero) digits is 27648, while the sum is 31.

The square root of 404606443 is about 20114.8314186324. The cubic root of 404606443 is about 739.6238915372.

The spelling of 404606443 in words is "four hundred four million, six hundred six thousand, four hundred forty-three".