440400400445 has 8 divisors (see below), whose sum is σ = 546703945560. Its totient is φ = 340171343680.

The previous prime is 440400400441. The next prime is 440400400459. The reversal of 440400400445 is 544004004044.

It can be written as a sum of positive squares in 4 ways, for example, as 150933804004 + 289466596441 = 388502^2 + 538021^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 440400400445 - 2² = 440400400441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1518621926 + ... + 1518622215.

It is an arithmetic number, because the mean of its divisors is an integer number (68337993195).

Almost surely, 2^440400400445 is an apocalyptic number.

It is an amenable number.

440400400445 is a deficient number, since it is larger than the sum of its proper divisors (106303545115).

440400400445 is a wasteful number, since it uses less digits than its factorization.

440400400445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3037244175.

The product of its (nonzero) digits is 20480, while the sum is 29.

Adding to 440400400445 its reverse (544004004044), we get a palindrome (984404404489).

The spelling of 440400400445 in words is "four hundred forty billion, four hundred million, four hundred thousand, four hundred forty-five".