440431222 has 16 divisors (see below), whose sum is σ = 823663872. Its totient is φ = 171596520.

The previous prime is 440431217. The next prime is 440431237. The reversal of 440431222 is 222134044.

It is a happy number.

It is a super-2 number, since 2×440431222² = 387959322624826568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 440431193 and 440431202.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1429818 + ... + 1430125.

It is an arithmetic number, because the mean of its divisors is an integer number (51478992).

Almost surely, 2^440431222 is an apocalyptic number.

440431222 is a deficient number, since it is larger than the sum of its proper divisors (383232650).

440431222 is a wasteful number, since it uses less digits than its factorization.

440431222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2859963.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 440431222 is about 20986.4532973059. The cubic root of 440431222 is about 760.8388832620.

Adding to 440431222 its reverse (222134044), we get a palindrome (662565266).

The spelling of 440431222 in words is "four hundred forty million, four hundred thirty-one thousand, two hundred twenty-two".