3821855 has 8 divisors (see below), whose sum is σ = 4856112. Its totient is φ = 2877568.

The previous prime is 3821837. The next prime is 3821863. The reversal of 3821855 is 5581283.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3821855 - 2⁶ = 3821791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22397 + ... + 22566.

It is an arithmetic number, because the mean of its divisors is an integer number (607014).

Almost surely, 2^3821855 is an apocalyptic number.

3821855 is a deficient number, since it is larger than the sum of its proper divisors (1034257).

3821855 is a wasteful number, since it uses less digits than its factorization.

3821855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44985.

The product of its digits is 9600, while the sum is 32.

The square root of 3821855 is about 1954.9565212557. The cubic root of 3821855 is about 156.3476658734.

The spelling of 3821855 in words is "three million, eight hundred twenty-one thousand, eight hundred fifty-five".