440660440 has 32 divisors (see below), whose sum is σ = 1081622160. Its totient is φ = 160240000.

The previous prime is 440660411. The next prime is 440660447. The reversal of 440660440 is 44066044.

It is a junction number, because it is equal to n+sod(n) for n = 440660399 and 440660408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440660447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500311 + ... + 501190.

Almost surely, 2^440660440 is an apocalyptic number.

440660440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

440660440 is an abundant number, since it is smaller than the sum of its proper divisors (640961720).

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

440660440 is a wasteful number, since it uses less digits than its factorization.

440660440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001523 (or 1001519 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 440660440 is about 20991.9136812250. The cubic root of 440660440 is about 760.9708506859.

It can be divided in two parts, 4406 and 60440, that added together give a palindrome (64846).

The spelling of 440660440 in words is "four hundred forty million, six hundred sixty thousand, four hundred forty".