400042330444 has 6 divisors (see below), whose sum is σ = 700074078284. Its totient is φ = 200021165220.

The previous prime is 400042330399. The next prime is 400042330487. The reversal of 400042330444 is 444033240004.

It is a super-2 number, since 2×400042330444² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50005291302 + ... + 50005291309.

Almost surely, 2^400042330444 is an apocalyptic number.

It is an amenable number.

400042330444 is a deficient number, since it is larger than the sum of its proper divisors (300031747840).

400042330444 is a wasteful number, since it uses less digits than its factorization.

400042330444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100010582615 (or 100010582613 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 400042330444 its reverse (444033240004), we get a palindrome (844075570448).

The spelling of 400042330444 in words is "four hundred billion, forty-two million, three hundred thirty thousand, four hundred forty-four".