3387421 has 2 divisors, whose sum is σ = 3387422. Its totient is φ = 3387420.

The previous prime is 3387413. The next prime is 3387443. The reversal of 3387421 is 1247833.

3387421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2595321 + 792100 = 1611^2 + 890^2 .

It is an emirp because it is prime and its reverse (1247833) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3387421 - 2³ = 3387413 is a prime.

It is a super-2 number, since 2×3387421² = 22949242062482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3387421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3387451) 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 as a sum of consecutive naturals, namely, 1693710 + 1693711.

It is an arithmetic number, because the mean of its divisors is an integer number (1693711).

Almost surely, 2^3387421 is an apocalyptic number.

It is an amenable number.

3387421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3387421 is an equidigital number, since it uses as much as digits as its factorization.

3387421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 28.

The square root of 3387421 is about 1840.4947704354. The cubic root of 3387421 is about 150.1837895322.

The spelling of 3387421 in words is "three million, three hundred eighty-seven thousand, four hundred twenty-one".