440044442420 has 96 divisors (see below), whose sum is σ = 1035144714240. Its totient is φ = 155776325760.

The previous prime is 440044442419. The next prime is 440044442441. The reversal of 440044442420 is 24244440044.

It is a super-2 number, since 2×440044442420² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1172369 + ... + 1501511.

It is an arithmetic number, because the mean of its divisors is an integer number (10782757440).

Almost surely, 2^440044442420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440044442420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (517572357120).

440044442420 is an abundant number, since it is smaller than the sum of its proper divisors (595100271820).

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

440044442420 is a wasteful number, since it uses less digits than its factorization.

440044442420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329325 (or 329323 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 440044442420 its reverse (24244440044), we get a palindrome (464288882464).

The spelling of 440044442420 in words is "four hundred forty billion, forty-four million, four hundred forty-two thousand, four hundred twenty".