1045309 has 2 divisors, whose sum is σ = 1045310. Its totient is φ = 1045308.

The previous prime is 1045307. The next prime is 1045321. The reversal of 1045309 is 9035401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 688900 + 356409 = 830^2 + 597^2 .

It is a cyclic number.

It is not a de Polignac number, because 1045309 - 2¹ = 1045307 is a prime.

Together with 1045307, it forms a pair of twin primes.

It is a Chen prime.

1045309 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1045309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1045307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522654 + 522655.

It is an arithmetic number, because the mean of its divisors is an integer number (522655).

2^1045309 is an apocalyptic number.

It is an amenable number.

1045309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1045309 is an equidigital number, since it uses as much as digits as its factorization.

1045309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1045309 is about 1022.4035406824. The cubic root of 1045309 is about 101.4880473197.

The spelling of 1045309 in words is "one million, forty-five thousand, three hundred nine".