4444444406 has 8 divisors (see below), whose sum is σ = 6692607720. Its totient is φ = 2213575168.

The previous prime is 4444444393. The next prime is 4444444429. The reversal of 4444444406 is 6044444444.

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

It is a self number, because there is not a number n which added to its sum of digits gives 4444444406.

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, 4322876 + ... + 4323903.

It is an arithmetic number, because the mean of its divisors is an integer number (836575965).

Almost surely, 2^4444444406 is an apocalyptic number.

4444444406 is a deficient number, since it is larger than the sum of its proper divisors (2248163314).

4444444406 is a wasteful number, since it uses less digits than its factorization.

4444444406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8647038.

The product of its (nonzero) digits is 393216, while the sum is 38.

The square root of 4444444406 is about 66666.6663783333. Note that the first 3 decimals coincide. The cubic root of 4444444406 is about 1644.1413781464.

Adding to 4444444406 its sum of digits (38), we get a palindrome (4444444444).

The spelling of 4444444406 in words is "four billion, four hundred forty-four million, four hundred forty-four thousand, four hundred six".