3859321 has 2 divisors, whose sum is σ = 3859322. Its totient is φ = 3859320.

The previous prime is 3859319. The next prime is 3859327. The reversal of 3859321 is 1239583.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3857296 + 2025 = 1964^2 + 45^2 .

It is an emirp because it is prime and its reverse (1239583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3859321 - 2¹ = 3859319 is a prime.

Together with 3859319, it forms a pair of twin primes.

3859321 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3859327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1929660 + 1929661.

It is an arithmetic number, because the mean of its divisors is an integer number (1929661).

Almost surely, 2^3859321 is an apocalyptic number.

It is an amenable number.

3859321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3859321 is an equidigital number, since it uses as much as digits as its factorization.

3859321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 31.

The square root of 3859321 is about 1964.5154618888. The cubic root of 3859321 is about 156.8569023529.

The spelling of 3859321 in words is "three million, eight hundred fifty-nine thousand, three hundred twenty-one".