40440404444 has 48 divisors (see below), whose sum is σ = 78260968800. Its totient is φ = 18131808000.

The previous prime is 40440404429. The next prime is 40440404449. The reversal of 40440404444 is 44440404404.

It is a self number, because there is not a number n which added to its sum of digits gives 40440404444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40440404449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1178522 + ... + 1212350.

It is an arithmetic number, because the mean of its divisors is an integer number (1630436850).

Almost surely, 2^40440404444 is an apocalyptic number.

40440404444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40440404444 is a deficient number, since it is larger than the sum of its proper divisors (37820564356).

40440404444 is a wasteful number, since it uses less digits than its factorization.

40440404444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34214 (or 34212 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 40440404444 its reverse (44440404404), we get a palindrome (84880808848).

The spelling of 40440404444 in words is "forty billion, four hundred forty million, four hundred four thousand, four hundred forty-four".