440513 has 4 divisors (see below), whose sum is σ = 442068. Its totient is φ = 438960.

The previous prime is 440509. The next prime is 440527. The reversal of 440513 is 315044.

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 332929 + 107584 = 577^2 + 328^2 .

It is a cyclic number.

It is not a de Polignac number, because 440513 - 2² = 440509 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 440491 and 440500.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 440513.

It is not an unprimeable number, because it can be changed into a prime (440543) 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, 218 + ... + 963.

It is an arithmetic number, because the mean of its divisors is an integer number (110517).

2⁴⁴⁰⁵¹³ is an apocalyptic number.

It is an amenable number.

440513 is a deficient number, since it is larger than the sum of its proper divisors (1555).

440513 is a wasteful number, since it uses less digits than its factorization.

440513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 440513 is about 663.7115337253. The cubic root of 440513 is about 76.0885970471.

Adding to 440513 its reverse (315044), we get a palindrome (755557).

The spelling of 440513 in words is "four hundred forty thousand, five hundred thirteen".