40000440440 has 16 divisors (see below), whose sum is σ = 90000991080. Its totient is φ = 16000176160.

The previous prime is 40000440421. The next prime is 40000440449. The reversal of 40000440440 is 4404400004.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40000440449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500005466 + ... + 500005545.

Almost surely, 2^40000440440 is an apocalyptic number.

40000440440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40000440440 is an abundant number, since it is smaller than the sum of its proper divisors (50000550640).

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

40000440440 is a wasteful number, since it uses less digits than its factorization.

40000440440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000011022 (or 1000011018 counting only the distinct ones).

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

Adding to 40000440440 its reverse (4404400004), we get a palindrome (44404840444).

The spelling of 40000440440 in words is "forty billion, four hundred forty thousand, four hundred forty".