400444044045 has 8 divisors (see below), whose sum is σ = 640710470496. Its totient is φ = 213570156816.

The previous prime is 400444043957. The next prime is 400444044073. The reversal of 400444044045 is 540440444004.

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

It is not a de Polignac number, because 400444044045 - 2⁷ = 400444043917 is a prime.

It is a super-2 number, since 2×400444044045² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400444043997 and 400444044015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13348134787 + ... + 13348134816.

It is an arithmetic number, because the mean of its divisors is an integer number (80088808812).

Almost surely, 2^400444044045 is an apocalyptic number.

It is an amenable number.

400444044045 is a deficient number, since it is larger than the sum of its proper divisors (240266426451).

400444044045 is a wasteful number, since it uses less digits than its factorization.

400444044045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26696269611.

The product of its (nonzero) digits is 81920, while the sum is 33.

Adding to 400444044045 its reverse (540440444004), we get a palindrome (940884488049).

The spelling of 400444044045 in words is "four hundred billion, four hundred forty-four million, forty-four thousand, forty-five".