4001440313 has 4 divisors (see below), whose sum is σ = 4309243428. Its totient is φ = 3693637200.

The previous prime is 4001440301. The next prime is 4001440393. The reversal of 4001440313 is 3130441004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 452497984 + 3548942329 = 21272^2 + 59573^2 .

It is a cyclic number.

It is not a de Polignac number, because 4001440313 - 2¹⁰ = 4001439289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4001440393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153901538 + ... + 153901563.

It is an arithmetic number, because the mean of its divisors is an integer number (1077310857).

Almost surely, 2^4001440313 is an apocalyptic number.

It is an amenable number.

4001440313 is a deficient number, since it is larger than the sum of its proper divisors (307803115).

4001440313 is a wasteful number, since it uses less digits than its factorization.

4001440313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307803114.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 4001440313 is about 63256.9388525875. The cubic root of 4001440313 is about 1587.5915586352.

Adding to 4001440313 its reverse (3130441004), we get a palindrome (7131881317).

The spelling of 4001440313 in words is "four billion, one million, four hundred forty thousand, three hundred thirteen".