3868121 has 2 divisors, whose sum is σ = 3868122. Its totient is φ = 3868120.

The previous prime is 3868097. The next prime is 3868133. The reversal of 3868121 is 1218683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2890000 + 978121 = 1700^2 + 989^2 .

It is an emirp because it is prime and its reverse (1218683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3868121 - 2⁶ = 3868057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3868141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1934060 + 1934061.

It is an arithmetic number, because the mean of its divisors is an integer number (1934061).

Almost surely, 2^3868121 is an apocalyptic number.

It is an amenable number.

3868121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3868121 is an equidigital number, since it uses as much as digits as its factorization.

3868121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 29.

The square root of 3868121 is about 1966.7539246179. The cubic root of 3868121 is about 156.9760332328.

It can be divided in two parts, 3868 and 121, that multiplied together give a triangular number (468028 = T₉₆₇).

The spelling of 3868121 in words is "three million, eight hundred sixty-eight thousand, one hundred twenty-one".