1319609 has 2 divisors, whose sum is σ = 1319610. Its totient is φ = 1319608.

The previous prime is 1319567. The next prime is 1319623. The reversal of 1319609 is 9069131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1006009 + 313600 = 1003^2 + 560^2 .

It is an emirp because it is prime and its reverse (9069131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1319609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1319209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659804 + 659805.

It is an arithmetic number, because the mean of its divisors is an integer number (659805).

2^1319609 is an apocalyptic number.

It is an amenable number.

1319609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1319609 is an equidigital number, since it uses as much as digits as its factorization.

1319609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 1319609 is about 1148.7423557961. The cubic root of 1319609 is about 109.6852988712.

The spelling of 1319609 in words is "one million, three hundred nineteen thousand, six hundred nine".