400244002404 has 24 divisors (see below), whose sum is σ = 974507136960. Its totient is φ = 127614029664.

The previous prime is 400244002397. The next prime is 400244002421. The reversal of 400244002404 is 404200442004.

It is a super-2 number, since 2×400244002404² (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, 725079439 + ... + 725079990.

It is an arithmetic number, because the mean of its divisors is an integer number (40604464040).

Almost surely, 2^400244002404 is an apocalyptic number.

It is an amenable number.

400244002404 is an abundant number, since it is smaller than the sum of its proper divisors (574263134556).

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

400244002404 is a wasteful number, since it uses less digits than its factorization.

400244002404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450159459 (or 1450159457 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 400244002404 its reverse (404200442004), we get a palindrome (804444444408).

The spelling of 400244002404 in words is "four hundred billion, two hundred forty-four million, two thousand, four hundred four".