3848721 has 4 divisors (see below), whose sum is σ = 5131632. Its totient is φ = 2565812.

The previous prime is 3848717. The next prime is 3848753. The reversal of 3848721 is 1278483.

3848721 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 Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1278483 = 3 ⋅426161.

It is a cyclic number.

It is not a de Polignac number, because 3848721 - 2² = 3848717 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (3848791) 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, 641451 + ... + 641456.

It is an arithmetic number, because the mean of its divisors is an integer number (1282908).

Almost surely, 2^3848721 is an apocalyptic number.

It is an amenable number.

3848721 is a deficient number, since it is larger than the sum of its proper divisors (1282911).

3848721 is a wasteful number, since it uses less digits than its factorization.

3848721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282910.

The product of its digits is 10752, while the sum is 33.

The square root of 3848721 is about 1961.8157405832. The cubic root of 3848721 is about 156.7131631017.

The spelling of 3848721 in words is "three million, eight hundred forty-eight thousand, seven hundred twenty-one".