3836809 has 2 divisors, whose sum is σ = 3836810. Its totient is φ = 3836808.

The previous prime is 3836801. The next prime is 3836827. The reversal of 3836809 is 9086383.

It is a happy number.

3836809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2975625 + 861184 = 1725^2 + 928^2 .

It is a cyclic number.

It is not a de Polignac number, because 3836809 - 2³ = 3836801 is a prime.

It is a super-2 number, since 2×3836809² = 29442206604962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3836801) 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, 1918404 + 1918405.

It is an arithmetic number, because the mean of its divisors is an integer number (1918405).

Almost surely, 2^3836809 is an apocalyptic number.

It is an amenable number.

3836809 is a deficient number, since it is larger than the sum of its proper divisors (1).

3836809 is an equidigital number, since it uses as much as digits as its factorization.

3836809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 3836809 is about 1958.7774248240. Note that the first 3 decimals coincide. The cubic root of 3836809 is about 156.5513174364.

The spelling of 3836809 in words is "three million, eight hundred thirty-six thousand, eight hundred nine".