3684389 has 2 divisors, whose sum is σ = 3684390. Its totient is φ = 3684388.

The previous prime is 3684371. The next prime is 3684391. The reversal of 3684389 is 9834863.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3496900 + 187489 = 1870^2 + 433^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3684389 is a prime.

Together with 3684391, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3684589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1842194 + 1842195.

It is an arithmetic number, because the mean of its divisors is an integer number (1842195).

Almost surely, 2^3684389 is an apocalyptic number.

It is an amenable number.

3684389 is a deficient number, since it is larger than the sum of its proper divisors (1).

3684389 is an equidigital number, since it uses as much as digits as its factorization.

3684389 is an odious number, because the sum of its binary digits is odd.

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

The square root of 3684389 is about 1919.4762306421. The cubic root of 3684389 is about 154.4502061619.

The spelling of 3684389 in words is "three million, six hundred eighty-four thousand, three hundred eighty-nine".