440164664 has 8 divisors (see below), whose sum is σ = 825308760. Its totient is φ = 220082328.

The previous prime is 440164661. The next prime is 440164679. The reversal of 440164664 is 466461044.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440164661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27510284 + ... + 27510299.

It is an arithmetic number, because the mean of its divisors is an integer number (103163595).

Almost surely, 2^440164664 is an apocalyptic number.

It is an amenable number.

440164664 is a deficient number, since it is larger than the sum of its proper divisors (385144096).

440164664 is a wasteful number, since it uses less digits than its factorization.

440164664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55020589 (or 55020585 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 440164664 is about 20980.1016203449. The cubic root of 440164664 is about 760.6853605255.

The spelling of 440164664 in words is "four hundred forty million, one hundred sixty-four thousand, six hundred sixty-four".