40400040404 has 12 divisors (see below), whose sum is σ = 74421127200. Its totient is φ = 19136861208.

The previous prime is 40400040361. The next prime is 40400040407. The reversal of 40400040404 is 40404000404.

40400040404 is a modest number, since divided by 40404 gives 40400 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40400040407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265789664 + ... + 265789815.

It is an arithmetic number, because the mean of its divisors is an integer number (6201760600).

Almost surely, 2^40400040404 is an apocalyptic number.

It is an amenable number.

40400040404 is a deficient number, since it is larger than the sum of its proper divisors (34021086796).

40400040404 is a wasteful number, since it uses less digits than its factorization.

40400040404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531579502 (or 531579500 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 40400040404 its reverse (40404000404), we get a palindrome (80804040808).

The spelling of 40400040404 in words is "forty billion, four hundred million, forty thousand, four hundred four".