3868321 has 2 divisors, whose sum is σ = 3868322. Its totient is φ = 3868320.

The previous prime is 3868297. The next prime is 3868331. The reversal of 3868321 is 1238683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3857296 + 11025 = 1964^2 + 105^2 .

It is an emirp because it is prime and its reverse (1238683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3868321 - 2²¹ = 1771169 is a prime.

It is not a weakly prime, because it can be changed into another prime (3868331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1934160 + 1934161.

It is an arithmetic number, because the mean of its divisors is an integer number (1934161).

Almost surely, 2^3868321 is an apocalyptic number.

It is an amenable number.

3868321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3868321 is an equidigital number, since it uses as much as digits as its factorization.

3868321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 3868321 is about 1966.8047691624. The cubic root of 3868321 is about 156.9787386520.

The spelling of 3868321 in words is "three million, eight hundred sixty-eight thousand, three hundred twenty-one".