3668389 has 2 divisors, whose sum is σ = 3668390. Its totient is φ = 3668388.

The previous prime is 3668383. The next prime is 3668407. The reversal of 3668389 is 9838663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3452164 + 216225 = 1858^2 + 465^2 .

It is a cyclic number.

It is not a de Polignac number, because 3668389 - 2³ = 3668381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3668381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1834194 + 1834195.

It is an arithmetic number, because the mean of its divisors is an integer number (1834195).

Almost surely, 2^3668389 is an apocalyptic number.

It is an amenable number.

3668389 is a deficient number, since it is larger than the sum of its proper divisors (1).

3668389 is an equidigital number, since it uses as much as digits as its factorization.

3668389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 43.

The square root of 3668389 is about 1915.3038923367. The cubic root of 3668389 is about 154.2263075144.

The spelling of 3668389 in words is "three million, six hundred sixty-eight thousand, three hundred eighty-nine".