34689209 has 2 divisors, whose sum is σ = 34689210. Its totient is φ = 34689208.

The previous prime is 34689203. The next prime is 34689223. The reversal of 34689209 is 90298643.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26832400 + 7856809 = 5180^2 + 2803^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34689209 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (34689203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17344604 + 17344605.

It is an arithmetic number, because the mean of its divisors is an integer number (17344605).

Almost surely, 2^34689209 is an apocalyptic number.

It is an amenable number.

34689209 is a deficient number, since it is larger than the sum of its proper divisors (1).

34689209 is an equidigital number, since it uses as much as digits as its factorization.

34689209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 34689209 is about 5889.7545789277. The cubic root of 34689209 is about 326.1355433954.

The spelling of 34689209 in words is "thirty-four million, six hundred eighty-nine thousand, two hundred nine".