3438689 has 2 divisors, whose sum is σ = 3438690. Its totient is φ = 3438688.

The previous prime is 3438683. The next prime is 3438691. The reversal of 3438689 is 9868343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2371600 + 1067089 = 1540^2 + 1033^2 .

It is an emirp because it is prime and its reverse (9868343) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3438689 is a prime.

Together with 3438691, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3438683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1719344 + 1719345.

It is an arithmetic number, because the mean of its divisors is an integer number (1719345).

Almost surely, 2^3438689 is an apocalyptic number.

It is an amenable number.

3438689 is a deficient number, since it is larger than the sum of its proper divisors (1).

3438689 is an equidigital number, since it uses as much as digits as its factorization.

3438689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 41.

The square root of 3438689 is about 1854.3702435059. The cubic root of 3438689 is about 150.9376670637.

The spelling of 3438689 in words is "three million, four hundred thirty-eight thousand, six hundred eighty-nine".