304709 has 2 divisors, whose sum is σ = 304710. Its totient is φ = 304708.

The previous prime is 304687. The next prime is 304723. The reversal of 304709 is 907403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 302500 + 2209 = 550^2 + 47^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304709 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152354 + 152355.

It is an arithmetic number, because the mean of its divisors is an integer number (152355).

2³⁰⁴⁷⁰⁹ is an apocalyptic number.

It is an amenable number.

304709 is a deficient number, since it is larger than the sum of its proper divisors (1).

304709 is an equidigital number, since it uses as much as digits as its factorization.

304709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 304709 is about 552.0045289669. The cubic root of 304709 is about 67.2917403704.

The spelling of 304709 in words is "three hundred four thousand, seven hundred nine".