40404040440 has 64 divisors (see below), whose sum is σ = 122284836000. Its totient is φ = 10679058432.

The previous prime is 40404040399. The next prime is 40404040451. The reversal of 40404040440 is 4404040404.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 40404040440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1476265 + ... + 1503384.

Almost surely, 2^40404040440 is an apocalyptic number.

40404040440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40404040440 is an abundant number, since it is smaller than the sum of its proper divisors (81880795560).

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

40404040440 is a wasteful number, since it uses less digits than its factorization.

40404040440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979776 (or 2979772 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 40404040440 its reverse (4404040404), we get a palindrome (44808080844).

The spelling of 40404040440 in words is "forty billion, four hundred four million, forty thousand, four hundred forty".