3689779 has 2 divisors, whose sum is σ = 3689780. Its totient is φ = 3689778.

The previous prime is 3689773. The next prime is 3689797. The reversal of 3689779 is 9779863.

3689779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (3689797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3689779 - 2³ = 3689771 is a prime.

It is a super-2 number, since 2×3689779² = 27228938137682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3689771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1844889 + 1844890.

It is an arithmetic number, because the mean of its divisors is an integer number (1844890).

Almost surely, 2^3689779 is an apocalyptic number.

3689779 is a deficient number, since it is larger than the sum of its proper divisors (1).

3689779 is an equidigital number, since it uses as much as digits as its factorization.

3689779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 49.

The square root of 3689779 is about 1920.8797463662. The cubic root of 3689779 is about 154.5254860328.

The spelling of 3689779 in words is "three million, six hundred eighty-nine thousand, seven hundred seventy-nine".