3809081 has 2 divisors, whose sum is σ = 3809082. Its totient is φ = 3809080.

The previous prime is 3809077. The next prime is 3809089. The reversal of 3809081 is 1809083.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3297856 + 511225 = 1816^2 + 715^2 .

It is an emirp because it is prime and its reverse (1809083) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3809081 - 2² = 3809077 is a prime.

It is a super-2 number, since 2×3809081² = 29018196129122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3809089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1904540 + 1904541.

It is an arithmetic number, because the mean of its divisors is an integer number (1904541).

Almost surely, 2^3809081 is an apocalyptic number.

It is an amenable number.

3809081 is a deficient number, since it is larger than the sum of its proper divisors (1).

3809081 is an equidigital number, since it uses as much as digits as its factorization.

3809081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 3809081 is about 1951.6867064158. The cubic root of 3809081 is about 156.1732815909.

The spelling of 3809081 in words is "three million, eight hundred nine thousand, eighty-one".