440134320 has 80 divisors (see below), whose sum is σ = 1393482240. Its totient is φ = 114868992.

The previous prime is 440134291. The next prime is 440134327. The reversal of 440134320 is 23431044.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (440134327) 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, 8230 + ... + 30789.

It is an arithmetic number, because the mean of its divisors is an integer number (17418528).

Almost surely, 2^440134320 is an apocalyptic number.

440134320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

440134320 is an abundant number, since it is smaller than the sum of its proper divisors (953347920).

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

440134320 is a wasteful number, since it uses less digits than its factorization.

440134320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39082 (or 39076 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 440134320 is about 20979.3784464650. The cubic root of 440134320 is about 760.6678801226.

Adding to 440134320 its reverse (23431044), we get a palindrome (463565364).

The spelling of 440134320 in words is "four hundred forty million, one hundred thirty-four thousand, three hundred twenty".