1335209 has 2 divisors, whose sum is σ = 1335210. Its totient is φ = 1335208.

The previous prime is 1335199. The next prime is 1335211. The reversal of 1335209 is 9025331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1315609 + 19600 = 1147^2 + 140^2 .

It is a cyclic number.

It is not a de Polignac number, because 1335209 - 2²⁰ = 286633 is a prime.

Together with 1335211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1335239) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 667604 + 667605.

It is an arithmetic number, because the mean of its divisors is an integer number (667605).

2^1335209 is an apocalyptic number.

It is an amenable number.

1335209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1335209 is an equidigital number, since it uses as much as digits as its factorization.

1335209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 1335209 is about 1155.5124404350. The cubic root of 1335209 is about 110.1158284048.

The spelling of 1335209 in words is "one million, three hundred thirty-five thousand, two hundred nine".