404440404422 has 4 divisors (see below), whose sum is σ = 606660606636. Its totient is φ = 202220202210.

The previous prime is 404440404419. The next prime is 404440404461. The reversal of 404440404422 is 224404044404.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101110101104 + ... + 101110101107.

It is an arithmetic number, because the mean of its divisors is an integer number (151665151659).

Almost surely, 2^404440404422 is an apocalyptic number.

404440404422 is a deficient number, since it is larger than the sum of its proper divisors (202220202214).

404440404422 is a wasteful number, since it uses less digits than its factorization.

404440404422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202220202213.

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 404440404422 its reverse (224404044404), we get a palindrome (628844448826).

The spelling of 404440404422 in words is "four hundred four billion, four hundred forty million, four hundred four thousand, four hundred twenty-two".