3881121 has 8 divisors (see below), whose sum is σ = 5197440. Its totient is φ = 2576112.

The previous prime is 3881113. The next prime is 3881131. The reversal of 3881121 is 1211883.

3881121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3881121 - 2³ = 3881113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3881091 and 3881100.

It is not an unprimeable number, because it can be changed into a prime (3881131) 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 7 ways as a sum of consecutive naturals, for example, 1990 + ... + 3423.

It is an arithmetic number, because the mean of its divisors is an integer number (649680).

Almost surely, 2^3881121 is an apocalyptic number.

It is an amenable number.

3881121 is a deficient number, since it is larger than the sum of its proper divisors (1316319).

3881121 is a wasteful number, since it uses less digits than its factorization.

3881121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5655.

The product of its digits is 384, while the sum is 24.

The square root of 3881121 is about 1970.0560905720. The cubic root of 3881121 is about 157.1516918685.

The spelling of 3881121 in words is "three million, eight hundred eighty-one thousand, one hundred twenty-one".