40000040044 has 24 divisors (see below), whose sum is σ = 74370719808. Its totient is φ = 18759294720.

The previous prime is 40000040039. The next prime is 40000040077. The reversal of 40000040044 is 44004000004.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 983892 + ... + 1023739.

It is an arithmetic number, because the mean of its divisors is an integer number (3098779992).

Almost surely, 2^40000040044 is an apocalyptic number.

It is an amenable number.

40000040044 is a deficient number, since it is larger than the sum of its proper divisors (34370679764).

40000040044 is a wasteful number, since it uses less digits than its factorization.

40000040044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007945 (or 2007943 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 40000040044 its reverse (44004000004), we get a palindrome (84004040048).

It can be divided in two parts, 400000 and 40044, that added together give a palindrome (440044).

The spelling of 40000040044 in words is "forty billion, forty thousand, forty-four", and thus it is an eban number.