40001044400 has 30 divisors (see below), whose sum is σ = 96102510132. Its totient is φ = 16000417600.

The previous prime is 40001044399. The next prime is 40001044403. The reversal of 40001044400 is 444010004.

It is not an unprimeable number, because it can be changed into a prime (40001044403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50000906 + ... + 50001705.

Almost surely, 2^40001044400 is an apocalyptic number.

40001044400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40001044400 is an abundant number, since it is smaller than the sum of its proper divisors (56101465732).

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

40001044400 is a wasteful number, since it uses less digits than its factorization.

40001044400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100002629 (or 100002618 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 40001044400 its reverse (444010004), we get a palindrome (40445054404).

The spelling of 40001044400 in words is "forty billion, one million, forty-four thousand, four hundred".