440263664 has 40 divisors (see below), whose sum is σ = 886014720. Its totient is φ = 211775168.

The previous prime is 440263651. The next prime is 440263667. The reversal of 440263664 is 466362044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440263667) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 39407 + ... + 49329.

It is an arithmetic number, because the mean of its divisors is an integer number (22150368).

Almost surely, 2^440263664 is an apocalyptic number.

It is an amenable number.

440263664 is an abundant number, since it is smaller than the sum of its proper divisors (445751056).

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

440263664 is a wasteful number, since it uses less digits than its factorization.

440263664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10037 (or 10031 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 35.

The square root of 440263664 is about 20982.4608661615. The cubic root of 440263664 is about 760.7423863097.

The spelling of 440263664 in words is "four hundred forty million, two hundred sixty-three thousand, six hundred sixty-four".