444428906 has 8 divisors (see below), whose sum is σ = 666745344. Its totient is φ = 222180460.

The previous prime is 444428899. The next prime is 444428921. The reversal of 444428906 is 609824444.

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

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, 5081 + ... + 30243.

It is an arithmetic number, because the mean of its divisors is an integer number (83343168).

Almost surely, 2^444428906 is an apocalyptic number.

444428906 is a deficient number, since it is larger than the sum of its proper divisors (222316438).

444428906 is a wasteful number, since it uses less digits than its factorization.

444428906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33996.

The product of its (nonzero) digits is 221184, while the sum is 41.

The square root of 444428906 is about 21081.4825380000. The cubic root of 444428906 is about 763.1339347259.

The spelling of 444428906 in words is "four hundred forty-four million, four hundred twenty-eight thousand, nine hundred six".