564239999 has 4 divisors (see below), whose sum is σ = 564437664. Its totient is φ = 564042336.

The previous prime is 564239993. The next prime is 564240007. The reversal of 564239999 is 999932465.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-564239999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564239993) 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 3 ways as a sum of consecutive naturals, for example, 94487 + ... + 100280.

It is an arithmetic number, because the mean of its divisors is an integer number (141109416).

Almost surely, 2^564239999 is an apocalyptic number.

564239999 is a deficient number, since it is larger than the sum of its proper divisors (197665).

564239999 is a wasteful number, since it uses less digits than its factorization.

564239999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197664.

The product of its digits is 4723920, while the sum is 56.

The square root of 564239999 is about 23753.7365271235. The cubic root of 564239999 is about 826.3320990651.

The spelling of 564239999 in words is "five hundred sixty-four million, two hundred thirty-nine thousand, nine hundred ninety-nine".