3946121 has 4 divisors (see below), whose sum is σ = 3950100. Its totient is φ = 3942144.

The previous prime is 3946051. The next prime is 3946123. The reversal of 3946121 is 1216493.

3946121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2768896 + 1177225 = 1664^2 + 1085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3946121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3946123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 845 + ... + 2933.

It is an arithmetic number, because the mean of its divisors is an integer number (987525).

Almost surely, 2^3946121 is an apocalyptic number.

It is an amenable number.

3946121 is a deficient number, since it is larger than the sum of its proper divisors (3979).

3946121 is a wasteful number, since it uses less digits than its factorization.

3946121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3978.

The product of its digits is 1296, while the sum is 26.

The square root of 3946121 is about 1986.4845833784. The cubic root of 3946121 is about 158.0241510911.

The spelling of 3946121 in words is "three million, nine hundred forty-six thousand, one hundred twenty-one".