34839209 has 2 divisors, whose sum is σ = 34839210. Its totient is φ = 34839208.

The previous prime is 34839193. The next prime is 34839221. The reversal of 34839209 is 90293843.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23088025 + 11751184 = 4805^2 + 3428^2 .

It is an emirp because it is prime and its reverse (90293843) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34839209 - 2⁴ = 34839193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (34839109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17419604 + 17419605.

It is an arithmetic number, because the mean of its divisors is an integer number (17419605).

Almost surely, 2^34839209 is an apocalyptic number.

It is an amenable number.

34839209 is a deficient number, since it is larger than the sum of its proper divisors (1).

34839209 is an equidigital number, since it uses as much as digits as its factorization.

34839209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 34839209 is about 5902.4748199378. The cubic root of 34839209 is about 326.6049495835.

The spelling of 34839209 in words is "thirty-four million, eight hundred thirty-nine thousand, two hundred nine".