1309039 has 2 divisors, whose sum is σ = 1309040. Its totient is φ = 1309038.

The previous prime is 1309013. The next prime is 1309057. The reversal of 1309039 is 9309031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1309039 - 2⁷ = 1308911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1309079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654519 + 654520.

It is an arithmetic number, because the mean of its divisors is an integer number (654520).

2^1309039 is an apocalyptic number.

1309039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1309039 is an equidigital number, since it uses as much as digits as its factorization.

1309039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 729, while the sum is 25.

The square root of 1309039 is about 1144.1324224057. The cubic root of 1309039 is about 109.3916555860.

The spelling of 1309039 in words is "one million, three hundred nine thousand, thirty-nine".