3802321 has 2 divisors, whose sum is σ = 3802322. Its totient is φ = 3802320.

The previous prime is 3802319. The next prime is 3802333. The reversal of 3802321 is 1232083.

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., 2873025 + 929296 = 1695^2 + 964^2 .

It is an emirp because it is prime and its reverse (1232083) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3802321 - 2¹ = 3802319 is a prime.

Together with 3802319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3802391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1901160 + 1901161.

It is an arithmetic number, because the mean of its divisors is an integer number (1901161).

Almost surely, 2^3802321 is an apocalyptic number.

It is an amenable number.

3802321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3802321 is an equidigital number, since it uses as much as digits as its factorization.

3802321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 3802321 is about 1949.9541020239. The cubic root of 3802321 is about 156.0808396487.

It can be divided in two parts, 380 and 2321, that added together give a triangular number (2701 = T₇₃).

The spelling of 3802321 in words is "three million, eight hundred two thousand, three hundred twenty-one".