440418 has 16 divisors (see below), whose sum is σ = 961056. Its totient is φ = 133440.

The previous prime is 440399. The next prime is 440431. The reversal of 440418 is 814044.

It is a junction number, because it is equal to n+sod(n) for n = 440394 and 440403.

It is an unprimeable number.

440418 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3271 + ... + 3402.

It is an arithmetic number, because the mean of its divisors is an integer number (60066).

2⁴⁴⁰⁴¹⁸ is an apocalyptic number.

440418 is an abundant number, since it is smaller than the sum of its proper divisors (520638).

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

440418 is a wasteful number, since it uses less digits than its factorization.

440418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6689.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 440418 is about 663.6399626303. The cubic root of 440418 is about 76.0831269578.

It can be divided in two parts, 440 and 418, that added together give a palindrome (858).

The spelling of 440418 in words is "four hundred forty thousand, four hundred eighteen".