3438209 has 2 divisors, whose sum is σ = 3438210. Its totient is φ = 3438208.

The previous prime is 3438203. The next prime is 3438217. The reversal of 3438209 is 9028343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3330625 + 107584 = 1825^2 + 328^2 .

It is a cyclic number.

It is not a de Polignac number, because 3438209 - 2⁸ = 3437953 is a prime.

It is a super-2 number, since 2×3438209² = 23642562255362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3438203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1719104 + 1719105.

It is an arithmetic number, because the mean of its divisors is an integer number (1719105).

Almost surely, 2^3438209 is an apocalyptic number.

It is an amenable number.

3438209 is a deficient number, since it is larger than the sum of its proper divisors (1).

3438209 is an equidigital number, since it uses as much as digits as its factorization.

3438209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 3438209 is about 1854.2408149968. The cubic root of 3438209 is about 150.9306437038.

The spelling of 3438209 in words is "three million, four hundred thirty-eight thousand, two hundred nine".