3340004021 has 4 divisors (see below), whose sum is σ = 3348170700. Its totient is φ = 3331837344.

The previous prime is 3340004009. The next prime is 3340004029. The reversal of 3340004021 is 1204000433.

3340004021 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.

It can be written as a sum of positive squares in 2 ways, for example, as 1539699121 + 1800304900 = 39239^2 + 42430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3340004021 is a prime.

It is a super-2 number, since 2×3340004021² = 22311253720592336882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3340004029) 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, 4082726 + ... + 4083543.

It is an arithmetic number, because the mean of its divisors is an integer number (837042675).

Almost surely, 2^3340004021 is an apocalyptic number.

It is an amenable number.

3340004021 is a deficient number, since it is larger than the sum of its proper divisors (8166679).

3340004021 is an equidigital number, since it uses as much as digits as its factorization.

3340004021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8166678.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 3340004021 is about 57792.7678952998. The cubic root of 3340004021 is about 1494.7973865899.

Adding to 3340004021 its reverse (1204000433), we get a palindrome (4544004454).

The spelling of 3340004021 in words is "three billion, three hundred forty million, four thousand, twenty-one".