34856209 has 2 divisors, whose sum is σ = 34856210. Its totient is φ = 34856208.

The previous prime is 34856189. The next prime is 34856221. The reversal of 34856209 is 90265843.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19607184 + 15249025 = 4428^2 + 3905^2 .

It is a cyclic number.

It is not a de Polignac number, because 34856209 - 2²¹ = 32759057 is a prime.

It is not a weakly prime, because it can be changed into another prime (34856249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17428104 + 17428105.

It is an arithmetic number, because the mean of its divisors is an integer number (17428105).

Almost surely, 2^34856209 is an apocalyptic number.

It is an amenable number.

34856209 is a deficient number, since it is larger than the sum of its proper divisors (1).

34856209 is an equidigital number, since it uses as much as digits as its factorization.

34856209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 34856209 is about 5903.9147182188. The cubic root of 34856209 is about 326.6580638903.

The spelling of 34856209 in words is "thirty-four million, eight hundred fifty-six thousand, two hundred nine".