444627664 has 40 divisors (see below), whose sum is σ = 976569440. Its totient is φ = 194410368.

The previous prime is 444627649. The next prime is 444627671. The reversal of 444627664 is 466726444.

It is a self number, because there is not a number n which added to its sum of digits gives 444627664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52302 + ... + 60205.

It is an arithmetic number, because the mean of its divisors is an integer number (24414236).

Almost surely, 2^444627664 is an apocalyptic number.

It is an amenable number.

444627664 is an abundant number, since it is smaller than the sum of its proper divisors (531941776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

444627664 is a wasteful number, since it uses less digits than its factorization.

444627664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112547 (or 112541 counting only the distinct ones).

The product of its digits is 774144, while the sum is 43.

The square root of 444627664 is about 21086.1960533426. The cubic root of 444627664 is about 763.2476809793.

The spelling of 444627664 in words is "four hundred forty-four million, six hundred twenty-seven thousand, six hundred sixty-four".