3189689 has 2 divisors, whose sum is σ = 3189690. Its totient is φ = 3189688.

The previous prime is 3189679. The next prime is 3189713. The reversal of 3189689 is 9869813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2839225 + 350464 = 1685^2 + 592^2 .

It is a cyclic number.

It is not a de Polignac number, because 3189689 - 2⁴ = 3189673 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3189619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1594844 + 1594845.

It is an arithmetic number, because the mean of its divisors is an integer number (1594845).

Almost surely, 2^3189689 is an apocalyptic number.

It is an amenable number.

3189689 is a deficient number, since it is larger than the sum of its proper divisors (1).

3189689 is an equidigital number, since it uses as much as digits as its factorization.

3189689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 44.

The square root of 3189689 is about 1785.9700445416. The cubic root of 3189689 is about 147.2028144399.

The spelling of 3189689 in words is "three million, one hundred eighty-nine thousand, six hundred eighty-nine".