3427309 has 2 divisors, whose sum is σ = 3427310. Its totient is φ = 3427308.

The previous prime is 3427289. The next prime is 3427327. The reversal of 3427309 is 9037243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1814409 + 1612900 = 1347^2 + 1270^2 .

It is an emirp because it is prime and its reverse (9037243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3427309 - 2⁷ = 3427181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3427339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1713654 + 1713655.

It is an arithmetic number, because the mean of its divisors is an integer number (1713655).

Almost surely, 2^3427309 is an apocalyptic number.

It is an amenable number.

3427309 is a deficient number, since it is larger than the sum of its proper divisors (1).

3427309 is an equidigital number, since it uses as much as digits as its factorization.

3427309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 3427309 is about 1851.2992734834. The cubic root of 3427309 is about 150.7709786385.

The spelling of 3427309 in words is "three million, four hundred twenty-seven thousand, three hundred nine".