4001040344 has 16 divisors (see below), whose sum is σ = 8573658000. Its totient is φ = 1714731552.

The previous prime is 4001040343. The next prime is 4001040413. The reversal of 4001040344 is 4430401004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001040341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35723519 + ... + 35723630.

It is an arithmetic number, because the mean of its divisors is an integer number (535853625).

Almost surely, 2^4001040344 is an apocalyptic number.

It is an amenable number.

4001040344 is an abundant number, since it is smaller than the sum of its proper divisors (4572617656).

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

4001040344 is a wasteful number, since it uses less digits than its factorization.

4001040344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71447162 (or 71447158 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 4001040344 is about 63253.7773101338. Note that the first 3 decimals coincide. The cubic root of 4001040344 is about 1587.5386603022.

Adding to 4001040344 its reverse (4430401004), we get a palindrome (8431441348).

The spelling of 4001040344 in words is "four billion, one million, forty thousand, three hundred forty-four".