440006422 has 8 divisors (see below), whose sum is σ = 688705776. Its totient is φ = 210437832.

The previous prime is 440006417. The next prime is 440006431. The reversal of 440006422 is 224600044.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 440006393 and 440006402.

It is a congruent number.

It is an unprimeable number.

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, 4782633 + ... + 4782724.

It is an arithmetic number, because the mean of its divisors is an integer number (86088222).

Almost surely, 2^440006422 is an apocalyptic number.

440006422 is a deficient number, since it is larger than the sum of its proper divisors (248699354).

440006422 is a wasteful number, since it uses less digits than its factorization.

440006422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9565382.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 440006422 is about 20976.3300412632. The cubic root of 440006422 is about 760.5941925223.

Adding to 440006422 its reverse (224600044), we get a palindrome (664606466).

The spelling of 440006422 in words is "four hundred forty million, six thousand, four hundred twenty-two".