440223144 has 16 divisors (see below), whose sum is σ = 1100557920. Its totient is φ = 146741040.

The previous prime is 440223139. The next prime is 440223149. The reversal of 440223144 is 441322044.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (440223139) and next prime (440223149).

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 18342631 = 440223144 / (4 + 4 + 0 + 2 + 2 + 3 + 1 + 4 + 4).

It is not an unprimeable number, because it can be changed into a prime (440223149) 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, 9171292 + ... + 9171339.

It is an arithmetic number, because the mean of its divisors is an integer number (68784870).

Almost surely, 2^440223144 is an apocalyptic number.

It is an amenable number.

440223144 is an abundant number, since it is smaller than the sum of its proper divisors (660334776).

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

440223144 is a wasteful number, since it uses less digits than its factorization.

440223144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18342640 (or 18342636 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 440223144 is about 20981.4952755994. The cubic root of 440223144 is about 760.7190470930.

Adding to 440223144 its reverse (441322044), we get a palindrome (881545188).

The spelling of 440223144 in words is "four hundred forty million, two hundred twenty-three thousand, one hundred forty-four".