40404004004 has 48 divisors (see below), whose sum is σ = 87461472000. Its totient is φ = 15903651456.

The previous prime is 40404004001. The next prime is 40404004027. The reversal of 40404004004 is 40040040404.

It is not an unprimeable number, because it can be changed into a prime (40404004001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206459 + ... + 351330.

It is an arithmetic number, because the mean of its divisors is an integer number (1822114000).

Almost surely, 2^40404004004 is an apocalyptic number.

It is an amenable number.

40404004004 is an abundant number, since it is smaller than the sum of its proper divisors (47057467996).

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

40404004004 is a wasteful number, since it uses less digits than its factorization.

40404004004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558012 (or 558010 counting only the distinct ones).

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

Adding to 40404004004 its reverse (40040040404), we get a palindrome (80444044408).

It can be divided in two parts, 4040400 and 4004, that added together give a palindrome (4044404).

The spelling of 40404004004 in words is "forty billion, four hundred four million, four thousand, four".