4040404040 has 64 divisors (see below), whose sum is σ = 9348030720. Its totient is φ = 1570752000.

The previous prime is 4040404031. The next prime is 4040404063. The reversal of 4040404040 is 404040404.

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

4040404040 is an undulating number in base 10.

4040404040 is a modest number, since divided by 404040 gives 4040 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439895 + ... + 448985.

It is an arithmetic number, because the mean of its divisors is an integer number (146062980).

Almost surely, 2^4040404040 is an apocalyptic number.

4040404040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4040404040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4674015360).

4040404040 is an abundant number, since it is smaller than the sum of its proper divisors (5307626680).

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

4040404040 is a wasteful number, since it uses less digits than its factorization.

4040404040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9414 (or 9410 counting only the distinct ones).

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

The square root of 4040404040 is about 63564.1726131946. The cubic root of 4040404040 is about 1592.7279410059.

4040404040 divided by its sum of digits (20) gives a palindrome (202020202).

Adding to 4040404040 its reverse (404040404), we get a palindrome (4444444444).

The spelling of 4040404040 in words is "four billion, forty million, four hundred four thousand, forty".