3866141 has 2 divisors, whose sum is σ = 3866142. Its totient is φ = 3866140.

The previous prime is 3866117. The next prime is 3866143. The reversal of 3866141 is 1416683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3667225 + 198916 = 1915^2 + 446^2 .

It is a cyclic number.

It is not a de Polignac number, because 3866141 - 2¹⁰ = 3865117 is a prime.

Together with 3866143, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3866143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1933070 + 1933071.

It is an arithmetic number, because the mean of its divisors is an integer number (1933071).

Almost surely, 2^3866141 is an apocalyptic number.

It is an amenable number.

3866141 is a deficient number, since it is larger than the sum of its proper divisors (1).

3866141 is an equidigital number, since it uses as much as digits as its factorization.

3866141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 3866141 is about 1966.2504926891. The cubic root of 3866141 is about 156.9492445506.

The spelling of 3866141 in words is "three million, eight hundred sixty-six thousand, one hundred forty-one".