4040505400 has 96 divisors (see below), whose sum is σ = 9626258880. Its totient is φ = 1576512000.

The previous prime is 4040505383. The next prime is 4040505421. The reversal of 4040505400 is 45050404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3956890 + ... + 3957910.

It is an arithmetic number, because the mean of its divisors is an integer number (100273530).

Almost surely, 2^4040505400 is an apocalyptic number.

4040505400 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 4040505400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4813129440).

4040505400 is an abundant number, since it is smaller than the sum of its proper divisors (5585753480).

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

4040505400 is a wasteful number, since it uses less digits than its factorization.

4040505400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505 (or 1496 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 4040505400 is about 63564.9699126807. The cubic root of 4040505400 is about 1592.7412596041.

Adding to 4040505400 its reverse (45050404), we get a palindrome (4085555804).

The spelling of 4040505400 in words is "four billion, forty million, five hundred five thousand, four hundred".