440564513 has 8 divisors (see below), whose sum is σ = 456480168. Its totient is φ = 424859904.

The previous prime is 440564497. The next prime is 440564521. The reversal of 440564513 is 315465044.

It can be written as a sum of positive squares in 4 ways, for example, as 529984 + 440034529 = 728^2 + 20977^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 440564513 - 2⁴ = 440564497 is a prime.

It is a super-2 number, since 2×440564513² = 388194180229854338, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 440564513.

It is not an unprimeable number, because it can be changed into a prime (440564543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48506 + ... + 56867.

It is an arithmetic number, because the mean of its divisors is an integer number (57060021).

Almost surely, 2^440564513 is an apocalyptic number.

It is an amenable number.

440564513 is a deficient number, since it is larger than the sum of its proper divisors (15915655).

440564513 is a wasteful number, since it uses less digits than its factorization.

440564513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105523.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 440564513 is about 20989.6287008608. The cubic root of 440564513 is about 760.9156283108.

The spelling of 440564513 in words is "four hundred forty million, five hundred sixty-four thousand, five hundred thirteen".