4043413521 has 24 divisors (see below), whose sum is σ = 6679018944. Its totient is φ = 2309076000.

The previous prime is 4043413499. The next prime is 4043413531. The reversal of 4043413521 is 1253143404.

It is a happy number.

It is not a de Polignac number, because 4043413521 - 2⁵ = 4043413489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4043413531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85771 + ... + 124271.

It is an arithmetic number, because the mean of its divisors is an integer number (278292456).

Almost surely, 2^4043413521 is an apocalyptic number.

It is an amenable number.

4043413521 is a deficient number, since it is larger than the sum of its proper divisors (2635605423).

4043413521 is a wasteful number, since it uses less digits than its factorization.

4043413521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40181 (or 40178 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 4043413521 is about 63587.8409839491. The cubic root of 4043413521 is about 1593.1232888337.

Adding to 4043413521 its reverse (1253143404), we get a palindrome (5296556925).

The spelling of 4043413521 in words is "four billion, forty-three million, four hundred thirteen thousand, five hundred twenty-one".