4040040445 has 24 divisors (see below), whose sum is σ = 5664488544. Its totient is φ = 2758071456.

The previous prime is 4040040443. The next prime is 4040040449. The reversal of 4040040445 is 5440400404.

It is not a de Polignac number, because 4040040445 - 2¹ = 4040040443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040040443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19294 + ... + 91936.

It is an arithmetic number, because the mean of its divisors is an integer number (236020356).

Almost surely, 2^4040040445 is an apocalyptic number.

It is an amenable number.

4040040445 is a deficient number, since it is larger than the sum of its proper divisors (1624448099).

4040040445 is a wasteful number, since it uses less digits than its factorization.

4040040445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72889 (or 72882 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 4040040445 is about 63561.3124864489. The cubic root of 4040040445 is about 1592.6801631697.

Adding to 4040040445 its reverse (5440400404), we get a palindrome (9480440849).

The spelling of 4040040445 in words is "four billion, forty million, forty thousand, four hundred forty-five".