709589 has 2 divisors, whose sum is σ = 709590. Its totient is φ = 709588.

The previous prime is 709561. The next prime is 709603. The reversal of 709589 is 985907.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 708964 + 625 = 842^2 + 25^2 .

It is a cyclic number.

It is not a de Polignac number, because 709589 - 2¹² = 705493 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 709589.

It is not a weakly prime, because it can be changed into another prime (709519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354794 + 354795.

It is an arithmetic number, because the mean of its divisors is an integer number (354795).

2⁷⁰⁹⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

709589 is a deficient number, since it is larger than the sum of its proper divisors (1).

709589 is an equidigital number, since it uses as much as digits as its factorization.

709589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 709589 is about 842.3710583822. The cubic root of 709589 is about 89.1939967271.

The spelling of 709589 in words is "seven hundred nine thousand, five hundred eighty-nine".