400013444302004 has 24 divisors (see below), whose sum is σ = 753875212887720. Its totient is φ = 184620678240384.

The previous prime is 400013444302001. The next prime is 400013444302061. The reversal of 400013444302004 is 400203444310004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 108781812741904 + 291231631560100 = 10429852^2 + 17065510^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400013444302001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8296499 + ... + 29476410.

It is an arithmetic number, because the mean of its divisors is an integer number (31411467203655).

Almost surely, 2^{400013444302004} is an apocalyptic number.

It is an amenable number.

400013444302004 is a deficient number, since it is larger than the sum of its proper divisors (353861768585716).

400013444302004 is a wasteful number, since it uses less digits than its factorization.

400013444302004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37976579 (or 37976577 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 400013444302004 its reverse (400203444310004), we get a palindrome (800216888612008).

The spelling of 400013444302004 in words is "four hundred trillion, thirteen billion, four hundred forty-four million, three hundred two thousand, four".