1383209 has 2 divisors, whose sum is σ = 1383210. Its totient is φ = 1383208.

The previous prime is 1383203. The next prime is 1383287. The reversal of 1383209 is 9023831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1315609 + 67600 = 1147^2 + 260^2 .

It is an emirp because it is prime and its reverse (9023831) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1383209 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1383203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 691604 + 691605.

It is an arithmetic number, because the mean of its divisors is an integer number (691605).

2^1383209 is an apocalyptic number.

It is an amenable number.

1383209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1383209 is an equidigital number, since it uses as much as digits as its factorization.

1383209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1383209 is about 1176.0990604537. The cubic root of 1383209 is about 111.4198583557.

The spelling of 1383209 in words is "one million, three hundred eighty-three thousand, two hundred nine".