400440312304 has 10 divisors (see below), whose sum is σ = 775853105120. Its totient is φ = 200220156144.

The previous prime is 400440312301. The next prime is 400440312397. The reversal of 400440312304 is 403213044004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400440312301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12513759744 + ... + 12513759775.

It is an arithmetic number, because the mean of its divisors is an integer number (77585310512).

Almost surely, 2^400440312304 is an apocalyptic number.

It is an amenable number.

400440312304 is a deficient number, since it is larger than the sum of its proper divisors (375412792816).

400440312304 is a wasteful number, since it uses less digits than its factorization.

400440312304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25027519527 (or 25027519521 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 400440312304 its reverse (403213044004), we get a palindrome (803653356308).

The spelling of 400440312304 in words is "four hundred billion, four hundred forty million, three hundred twelve thousand, three hundred four".