40004444432 has 20 divisors (see below), whose sum is σ = 77620801296. Its totient is φ = 19973269920.

The previous prime is 40004444401. The next prime is 40004444443. The reversal of 40004444432 is 23444440004.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40004444395 and 40004444404.

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 3 ways as a sum of consecutive naturals, for example, 1798118 + ... + 1820229.

Almost surely, 2^40004444432 is an apocalyptic number.

It is an amenable number.

40004444432 is a deficient number, since it is larger than the sum of its proper divisors (37616356864).

40004444432 is a wasteful number, since it uses less digits than its factorization.

40004444432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3619046 (or 3619040 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 29.

Adding to 40004444432 its reverse (23444440004), we get a palindrome (63448884436).

The spelling of 40004444432 in words is "forty billion, four million, four hundred forty-four thousand, four hundred thirty-two".