440243304021 has 24 divisors (see below), whose sum is σ = 639685594080. Its totient is φ = 291752728416.

The previous prime is 440243304013. The next prime is 440243304041. The reversal of 440243304021 is 120403342044.

It is a happy number.

It is not a de Polignac number, because 440243304021 - 2³ = 440243304013 is a prime.

It is a super-3 number, since 3×440243304021³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440243304041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4652446 + ... + 4746128.

It is an arithmetic number, because the mean of its divisors is an integer number (26653566420).

Almost surely, 2^440243304021 is an apocalyptic number.

It is an amenable number.

440243304021 is a deficient number, since it is larger than the sum of its proper divisors (199442290059).

440243304021 is a wasteful number, since it uses less digits than its factorization.

440243304021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96785 (or 96782 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 440243304021 its reverse (120403342044), we get a palindrome (560646646065).

The spelling of 440243304021 in words is "four hundred forty billion, two hundred forty-three million, three hundred four thousand, twenty-one".