3821961 has 32 divisors (see below), whose sum is σ = 6128640. Its totient is φ = 2088000.

The previous prime is 3821953. The next prime is 3821963. The reversal of 3821961 is 1691283.

It is not a de Polignac number, because 3821961 - 2³ = 3821953 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (3821963) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25236 + ... + 25386.

It is an arithmetic number, because the mean of its divisors is an integer number (191520).

Almost surely, 2^3821961 is an apocalyptic number.

It is an amenable number.

3821961 is a deficient number, since it is larger than the sum of its proper divisors (2306679).

3821961 is a wasteful number, since it uses less digits than its factorization.

3821961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237.

The product of its digits is 2592, while the sum is 30.

The square root of 3821961 is about 1954.9836316450. The cubic root of 3821961 is about 156.3491113058.

The spelling of 3821961 in words is "three million, eight hundred twenty-one thousand, nine hundred sixty-one".