444406064 has 20 divisors (see below), whose sum is σ = 862805640. Its totient is φ = 221746560.

The previous prime is 444406057. The next prime is 444406099. The reversal of 444406064 is 460604444.

It is a self number, because there is not a number n which added to its sum of digits gives 444406064.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20429 + ... + 36140.

It is an arithmetic number, because the mean of its divisors is an integer number (43140282).

Almost surely, 2^444406064 is an apocalyptic number.

It is an amenable number.

444406064 is a deficient number, since it is larger than the sum of its proper divisors (418399576).

444406064 is a wasteful number, since it uses less digits than its factorization.

444406064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57068 (or 57062 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

The square root of 444406064 is about 21080.9407759711. The cubic root of 444406064 is about 763.1208604158.

The spelling of 444406064 in words is "four hundred forty-four million, four hundred six thousand, sixty-four".