564450389 has 2 divisors, whose sum is σ = 564450390. Its totient is φ = 564450388.

The previous prime is 564450377. The next prime is 564450391. The reversal of 564450389 is 983054465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 377991364 + 186459025 = 19442^2 + 13655^2 .

It is a cyclic number.

It is not a de Polignac number, because 564450389 - 2⁴ = 564450373 is a prime.

Together with 564450391, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (564450319) 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 as a sum of consecutive naturals, namely, 282225194 + 282225195.

It is an arithmetic number, because the mean of its divisors is an integer number (282225195).

Almost surely, 2^564450389 is an apocalyptic number.

It is an amenable number.

564450389 is a deficient number, since it is larger than the sum of its proper divisors (1).

564450389 is an equidigital number, since it uses as much as digits as its factorization.

564450389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 44.

The square root of 564450389 is about 23758.1646807997. The cubic root of 564450389 is about 826.4347920131.

The spelling of 564450389 in words is "five hundred sixty-four million, four hundred fifty thousand, three hundred eighty-nine".