3856549 has 2 divisors, whose sum is σ = 3856550. Its totient is φ = 3856548.

The previous prime is 3856537. The next prime is 3856561. The reversal of 3856549 is 9456583.

It is a balanced prime because it is at equal distance from previous prime (3856537) and next prime (3856561).

It can be written as a sum of positive squares in only one way, i.e., 1979649 + 1876900 = 1407^2 + 1370^2 .

It is a cyclic number.

It is not a de Polignac number, because 3856549 - 2⁹ = 3856037 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

3856549 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3856519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1928274 + 1928275.

It is an arithmetic number, because the mean of its divisors is an integer number (1928275).

Almost surely, 2^3856549 is an apocalyptic number.

It is an amenable number.

3856549 is a deficient number, since it is larger than the sum of its proper divisors (1).

3856549 is an equidigital number, since it uses as much as digits as its factorization.

3856549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 40.

The square root of 3856549 is about 1963.8098176758. The cubic root of 3856549 is about 156.8193386229.

The spelling of 3856549 in words is "three million, eight hundred fifty-six thousand, five hundred forty-nine".