440412220 has 12 divisors (see below), whose sum is σ = 924865704. Its totient is φ = 176164880.

The previous prime is 440412197. The next prime is 440412227. The reversal of 440412220 is 22214044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440412227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11010286 + ... + 11010325.

It is an arithmetic number, because the mean of its divisors is an integer number (77072142).

Almost surely, 2^440412220 is an apocalyptic number.

It is an amenable number.

440412220 is an abundant number, since it is smaller than the sum of its proper divisors (484453484).

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

440412220 is a wasteful number, since it uses less digits than its factorization.

440412220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22020620 (or 22020618 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 440412220 is about 20986.0005718098. Note that the first 3 decimals coincide. The cubic root of 440412220 is about 760.8279412067.

Adding to 440412220 its reverse (22214044), we get a palindrome (462626264).

The spelling of 440412220 in words is "four hundred forty million, four hundred twelve thousand, two hundred twenty".