3380021 has 4 divisors (see below), whose sum is σ = 3389100. Its totient is φ = 3370944.

The previous prime is 3380017. The next prime is 3380033. The reversal of 3380021 is 1200833.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1999396 + 1380625 = 1414^2 + 1175^2 .

It is a cyclic number.

It is not a de Polignac number, because 3380021 - 2² = 3380017 is a prime.

It is a super-2 number, since 2×3380021² = 22849083920882, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3340021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3956 + ... + 4733.

It is an arithmetic number, because the mean of its divisors is an integer number (847275).

Almost surely, 2^3380021 is an apocalyptic number.

It is an amenable number.

3380021 is a deficient number, since it is larger than the sum of its proper divisors (9079).

3380021 is an equidigital number, since it uses as much as digits as its factorization.

3380021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9078.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3380021 is about 1838.4833423232. The cubic root of 3380021 is about 150.0743483279.

Adding to 3380021 its reverse (1200833), we get a palindrome (4580854).

The spelling of 3380021 in words is "three million, three hundred eighty thousand, twenty-one".