440400400443 has 24 divisors (see below), whose sum is σ = 643951356048. Its totient is φ = 289993900032.

The previous prime is 440400400441. The next prime is 440400400459. The reversal of 440400400443 is 344004004044.

It is not a de Polignac number, because 440400400443 - 2¹ = 440400400441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (440400400441) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3171771 + ... + 3307707.

It is an arithmetic number, because the mean of its divisors is an integer number (26831306502).

Almost surely, 2^440400400443 is an apocalyptic number.

440400400443 is a deficient number, since it is larger than the sum of its proper divisors (203550955605).

440400400443 is a wasteful number, since it uses less digits than its factorization.

440400400443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140363 (or 140360 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 440400400443 its reverse (344004004044), we get a palindrome (784404404487).

The spelling of 440400400443 in words is "four hundred forty billion, four hundred million, four hundred thousand, four hundred forty-three".