566447389 has 2 divisors, whose sum is σ = 566447390. Its totient is φ = 566447388.

The previous prime is 566447383. The next prime is 566447419. The reversal of 566447389 is 983744665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 406627225 + 159820164 = 20165^2 + 12642^2 .

It is a cyclic number.

It is not a de Polignac number, because 566447389 - 2²⁷ = 432229661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (566447383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283223694 + 283223695.

It is an arithmetic number, because the mean of its divisors is an integer number (283223695).

Almost surely, 2^566447389 is an apocalyptic number.

It is an amenable number.

566447389 is a deficient number, since it is larger than the sum of its proper divisors (1).

566447389 is an equidigital number, since it uses as much as digits as its factorization.

566447389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 52.

The square root of 566447389 is about 23800.1552305862. The cubic root of 566447389 is about 827.4082745328.

The spelling of 566447389 in words is "five hundred sixty-six million, four hundred forty-seven thousand, three hundred eighty-nine".