3865013 has 2 divisors, whose sum is σ = 3865014. Its totient is φ = 3865012.

The previous prime is 3865009. The next prime is 3865019. The reversal of 3865013 is 3105683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2745649 + 1119364 = 1657^2 + 1058^2 .

It is a cyclic number.

It is not a de Polignac number, because 3865013 - 2² = 3865009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3865019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1932506 + 1932507.

It is an arithmetic number, because the mean of its divisors is an integer number (1932507).

Almost surely, 2^3865013 is an apocalyptic number.

It is an amenable number.

3865013 is a deficient number, since it is larger than the sum of its proper divisors (1).

3865013 is an equidigital number, since it uses as much as digits as its factorization.

3865013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 3865013 is about 1965.9636314032. The cubic root of 3865013 is about 156.9339790297.

The spelling of 3865013 in words is "three million, eight hundred sixty-five thousand, thirteen".