440856864 has 96 divisors (see below), whose sum is σ = 1469543040. Its totient is φ = 125957376.

The previous prime is 440856863. The next prime is 440856881. The reversal of 440856864 is 468658044.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (440856863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30399 + ... + 42494.

It is an arithmetic number, because the mean of its divisors is an integer number (15307740).

Almost surely, 2^440856864 is an apocalyptic number.

It is an amenable number.

440856864 is an abundant number, since it is smaller than the sum of its proper divisors (1028686176).

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

440856864 is a wasteful number, since it uses less digits than its factorization.

440856864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72919 (or 72905 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The square root of 440856864 is about 20996.5917234203. The cubic root of 440856864 is about 761.0839012506.

The spelling of 440856864 in words is "four hundred forty million, eight hundred fifty-six thousand, eight hundred sixty-four".