440044664 has 8 divisors (see below), whose sum is σ = 825083760. Its totient is φ = 220022328.

The previous prime is 440044639. The next prime is 440044673. The reversal of 440044664 is 466440044.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 440044664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27502784 + ... + 27502799.

It is an arithmetic number, because the mean of its divisors is an integer number (103135470).

Almost surely, 2^440044664 is an apocalyptic number.

It is an amenable number.

440044664 is a deficient number, since it is larger than the sum of its proper divisors (385039096).

440044664 is a wasteful number, since it uses less digits than its factorization.

440044664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55005589 (or 55005585 counting only the distinct ones).

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

The square root of 440044664 is about 20977.2415727140. The cubic root of 440044664 is about 760.6162268980.

The spelling of 440044664 in words is "four hundred forty million, forty-four thousand, six hundred sixty-four".