3821939 has 8 divisors (see below), whose sum is σ = 4313520. Its totient is φ = 3354400.

The previous prime is 3821929. The next prime is 3821947. The reversal of 3821939 is 9391283.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3821939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3821899 and 3821908.

It is not an unprimeable number, because it can be changed into a prime (3821929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5672 + ... + 6309.

It is an arithmetic number, because the mean of its divisors is an integer number (539190).

Almost surely, 2^3821939 is an apocalyptic number.

3821939 is a deficient number, since it is larger than the sum of its proper divisors (491581).

3821939 is a wasteful number, since it uses less digits than its factorization.

3821939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12021.

The product of its digits is 11664, while the sum is 35.

The square root of 3821939 is about 1954.9780049914. The cubic root of 3821939 is about 156.3488113126.

The spelling of 3821939 in words is "three million, eight hundred twenty-one thousand, nine hundred thirty-nine".