4040143440 has 80 divisors (see below), whose sum is σ = 12545530368. Its totient is φ = 1075557888.

The previous prime is 4040143433. The next prime is 4040143501. The reversal of 4040143440 is 443410404.

4040143440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

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 4040143440.

It is a congruent number.

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, 131814 + ... + 159546.

Almost surely, 2^4040143440 is an apocalyptic number.

4040143440 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 4040143440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6272765184).

4040143440 is an abundant number, since it is smaller than the sum of its proper divisors (8505386928).

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

4040143440 is a wasteful number, since it uses less digits than its factorization.

4040143440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28356 (or 28350 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 4040143440 is about 63562.1226832459. The cubic root of 4040143440 is about 1592.6936974153.

Adding to 4040143440 its reverse (443410404), we get a palindrome (4483553844).

The spelling of 4040143440 in words is "four billion, forty million, one hundred forty-three thousand, four hundred forty".