440522064 has 120 divisors (see below), whose sum is σ = 1322936160. Its totient is φ = 141740928.

The previous prime is 440522041. The next prime is 440522113. The reversal of 440522064 is 460225044.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110799 + ... + 114705.

It is an arithmetic number, because the mean of its divisors is an integer number (11024468).

Almost surely, 2^440522064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440522064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (661468080).

440522064 is an abundant number, since it is smaller than the sum of its proper divisors (882414096).

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

440522064 is a wasteful number, since it uses less digits than its factorization.

440522064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3959 (or 3941 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 440522064 is about 20988.6174866283. The cubic root of 440522064 is about 760.8911891015.

The spelling of 440522064 in words is "four hundred forty million, five hundred twenty-two thousand, sixty-four".