40000404440 has 32 divisors (see below), whose sum is σ = 90797388480. Its totient is φ = 15858565632.

The previous prime is 40000404401. The next prime is 40000404511. The reversal of 40000404440 is 4440400004.

40000404440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4420304 + ... + 4429343.

It is an arithmetic number, because the mean of its divisors is an integer number (2837418390).

Almost surely, 2^40000404440 is an apocalyptic number.

40000404440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40000404440 is an abundant number, since it is smaller than the sum of its proper divisors (50796984040).

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

40000404440 is a wasteful number, since it uses less digits than its factorization.

40000404440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8849771 (or 8849767 counting only the distinct ones).

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

Adding to 40000404440 its reverse (4440400004), we get a palindrome (44440804444).

The spelling of 40000404440 in words is "forty billion, four hundred four thousand, four hundred forty".