440021022 has 64 divisors (see below), whose sum is σ = 1022699520. Its totient is φ = 123623136.

The previous prime is 440021017. The next prime is 440021053. The reversal of 440021022 is 220120044.

It is a junction number, because it is equal to n+sod(n) for n = 440020992 and 440021010.

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 31 ways as a sum of consecutive naturals, for example, 804153 + ... + 804699.

It is an arithmetic number, because the mean of its divisors is an integer number (15979680).

Almost surely, 2^440021022 is an apocalyptic number.

440021022 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

440021022 is an abundant number, since it is smaller than the sum of its proper divisors (582678498).

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

440021022 is a wasteful number, since it uses less digits than its factorization.

440021022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 440021022 is about 20976.6780496817. The cubic root of 440021022 is about 760.6026049392.

Adding to 440021022 its reverse (220120044), we get a palindrome (660141066).

The spelling of 440021022 in words is "four hundred forty million, twenty-one thousand, twenty-two".