440113013 has 4 divisors (see below), whose sum is σ = 440321100. Its totient is φ = 439904928.

The previous prime is 440112997. The next prime is 440113021. The reversal of 440113013 is 310311044.

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 44182609 + 395930404 = 6647^2 + 19898^2 .

It is a cyclic number.

It is not a de Polignac number, because 440113013 - 2⁴ = 440112997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 440112982 and 440113000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440113033) 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, 100838 + ... + 105111.

It is an arithmetic number, because the mean of its divisors is an integer number (110080275).

Almost surely, 2^440113013 is an apocalyptic number.

It is an amenable number.

440113013 is a deficient number, since it is larger than the sum of its proper divisors (208087).

440113013 is a wasteful number, since it uses less digits than its factorization.

440113013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208086.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 440113013 is about 20978.8706321384. The cubic root of 440113013 is about 760.6556052243.

Adding to 440113013 its reverse (310311044), we get a palindrome (750424057).

The spelling of 440113013 in words is "four hundred forty million, one hundred thirteen thousand, thirteen".