440243220 has 48 divisors (see below), whose sum is σ = 1305194688. Its totient is φ = 110492160.

The previous prime is 440243201. The next prime is 440243227. The reversal of 440243220 is 22342044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440243227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214786 + ... + 216825.

It is an arithmetic number, because the mean of its divisors is an integer number (27191556).

Almost surely, 2^440243220 is an apocalyptic number.

It is an amenable number.

440243220 is an abundant number, since it is smaller than the sum of its proper divisors (864951468).

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

440243220 is a wasteful number, since it uses less digits than its factorization.

440243220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431640 (or 431638 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 440243220 is about 20981.9736917193. The cubic root of 440243220 is about 760.7306108977.

Adding to 440243220 its reverse (22342044), we get a palindrome (462585264).

The spelling of 440243220 in words is "four hundred forty million, two hundred forty-three thousand, two hundred twenty".