3861321 has 8 divisors (see below), whose sum is σ = 5326080. Its totient is φ = 2485392.

The previous prime is 3861317. The next prime is 3861337. The reversal of 3861321 is 1231683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3861321 - 2² = 3861317 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3861291 and 3861300.

It is not an unprimeable number, because it can be changed into a prime (3861521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22105 + ... + 22278.

It is an arithmetic number, because the mean of its divisors is an integer number (665760).

Almost surely, 2^3861321 is an apocalyptic number.

It is an amenable number.

3861321 is a deficient number, since it is larger than the sum of its proper divisors (1464759).

3861321 is a wasteful number, since it uses less digits than its factorization.

3861321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44415.

The product of its digits is 864, while the sum is 24.

The square root of 3861321 is about 1965.0244273291. The cubic root of 3861321 is about 156.8839934422.

The spelling of 3861321 in words is "three million, eight hundred sixty-one thousand, three hundred twenty-one".