3826021 has 4 divisors (see below), whose sum is σ = 3869100. Its totient is φ = 3782944.

The previous prime is 3826019. The next prime is 3826157. The reversal of 3826021 is 1206283.

3826021 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 an emirpimes, since its reverse is a distinct semiprime: 1206283 = 13 ⋅92791.

It can be written as a sum of positive squares in 2 ways, for example, as 1221025 + 2604996 = 1105^2 + 1614^2 .

It is a cyclic number.

It is not a de Polignac number, because 3826021 - 2¹ = 3826019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3825983 and 3826001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3826001) 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, 21406 + ... + 21583.

It is an arithmetic number, because the mean of its divisors is an integer number (967275).

Almost surely, 2^3826021 is an apocalyptic number.

It is an amenable number.

3826021 is a deficient number, since it is larger than the sum of its proper divisors (43079).

3826021 is an equidigital number, since it uses as much as digits as its factorization.

3826021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43078.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 3826021 is about 1956.0217278957. The cubic root of 3826021 is about 156.4044539911.

The spelling of 3826021 in words is "three million, eight hundred twenty-six thousand, twenty-one".