3875021 has 4 divisors (see below), whose sum is σ = 3921792. Its totient is φ = 3828252.

The previous prime is 3874987. The next prime is 3875041. The reversal of 3875021 is 1205783.

3875021 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.

It is a cyclic number.

It is not a de Polignac number, because 3875021 - 2⁶ = 3874957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3875041) 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, 23261 + ... + 23426.

It is an arithmetic number, because the mean of its divisors is an integer number (980448).

Almost surely, 2^3875021 is an apocalyptic number.

It is an amenable number.

3875021 is a deficient number, since it is larger than the sum of its proper divisors (46771).

3875021 is an equidigital number, since it uses as much as digits as its factorization.

3875021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46770.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 3875021 is about 1968.5073025011. The cubic root of 3875021 is about 157.0693163567.

The spelling of 3875021 in words is "three million, eight hundred seventy-five thousand, twenty-one".