440079644 has 6 divisors (see below), whose sum is σ = 770139384. Its totient is φ = 220039820.

The previous prime is 440079641. The next prime is 440079701. The reversal of 440079644 is 446970044.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 440079598 and 440079607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440079641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55009952 + ... + 55009959.

It is an arithmetic number, because the mean of its divisors is an integer number (128356564).

Almost surely, 2^440079644 is an apocalyptic number.

It is an amenable number.

440079644 is a deficient number, since it is larger than the sum of its proper divisors (330059740).

440079644 is a wasteful number, since it uses less digits than its factorization.

440079644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110019915 (or 110019913 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 440079644 is about 20978.0753168636. The cubic root of 440079644 is about 760.6363806482.

The spelling of 440079644 in words is "four hundred forty million, seventy-nine thousand, six hundred forty-four".