564440447 has 8 divisors (see below), whose sum is σ = 589320576. Its totient is φ = 539588632.

The previous prime is 564440363. The next prime is 564440449. The reversal of 564440447 is 744044465.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-564440447 is a prime.

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 564440447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564440449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40568 + ... + 52674.

It is an arithmetic number, because the mean of its divisors is an integer number (73665072).

Almost surely, 2^564440447 is an apocalyptic number.

564440447 is a deficient number, since it is larger than the sum of its proper divisors (24880129).

564440447 is a wasteful number, since it uses less digits than its factorization.

564440447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14157.

The product of its (nonzero) digits is 215040, while the sum is 38.

The square root of 564440447 is about 23757.9554465446. The cubic root of 564440447 is about 826.4299398223.

The spelling of 564440447 in words is "five hundred sixty-four million, four hundred forty thousand, four hundred forty-seven".