3339821 has 4 divisors (see below), whose sum is σ = 3345852. Its totient is φ = 3333792.

The previous prime is 3339797. The next prime is 3339857. The reversal of 3339821 is 1289333.

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 346921 + 2992900 = 589^2 + 1730^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3339821 is a prime.

It is a super-2 number, since 2×3339821² = 22308808624082, which contains 22 as substring.

It is a pancake number, because a pancake can be divided into 3339821 parts by 2584 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3339881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2090 + ... + 3323.

It is an arithmetic number, because the mean of its divisors is an integer number (836463).

Almost surely, 2^3339821 is an apocalyptic number.

It is an amenable number.

3339821 is a deficient number, since it is larger than the sum of its proper divisors (6031).

3339821 is an equidigital number, since it uses as much as digits as its factorization.

3339821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6030.

The product of its digits is 3888, while the sum is 29.

The square root of 3339821 is about 1827.5177153724. The cubic root of 3339821 is about 149.4770082799.

The spelling of 3339821 in words is "three million, three hundred thirty-nine thousand, eight hundred twenty-one".