400442422404 has 24 divisors (see below), whose sum is σ = 989328338208. Its totient is φ = 125628995200.

The previous prime is 400442422379. The next prime is 400442422453. The reversal of 400442422404 is 404224244004.

It is a super-2 number, since 2×400442422404² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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, 981476322 + ... + 981476729.

It is an arithmetic number, because the mean of its divisors is an integer number (41222014092).

Almost surely, 2^400442422404 is an apocalyptic number.

It is an amenable number.

400442422404 is an abundant number, since it is smaller than the sum of its proper divisors (588885915804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400442422404 is a wasteful number, since it uses less digits than its factorization.

400442422404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962953075 (or 1962953073 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 400442422404 its reverse (404224244004), we get a palindrome (804666666408).

The spelling of 400442422404 in words is "four hundred billion, four hundred forty-two million, four hundred twenty-two thousand, four hundred four".