400044444441 has 8 divisors (see below), whose sum is σ = 533881499424. Its totient is φ = 266451842880.

The previous prime is 400044444403. The next prime is 400044444451. The reversal of 400044444441 is 144444440004.

It is a happy number.

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

It is not a de Polignac number, because 400044444441 - 2¹⁴ = 400044428057 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400044444451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61109536 + ... + 61116081.

It is an arithmetic number, because the mean of its divisors is an integer number (66735187428).

Almost surely, 2^400044444441 is an apocalyptic number.

It is an amenable number.

400044444441 is a deficient number, since it is larger than the sum of its proper divisors (133837054983).

400044444441 is a wasteful number, since it uses less digits than its factorization.

400044444441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122226711.

The product of its (nonzero) digits is 65536, while the sum is 33.

Adding to 400044444441 its reverse (144444440004), we get a palindrome (544488884445).

The spelling of 400044444441 in words is "four hundred billion, forty-four million, four hundred forty-four thousand, four hundred forty-one".