3384721 has 2 divisors, whose sum is σ = 3384722. Its totient is φ = 3384720.

The previous prime is 3384713. The next prime is 3384727. The reversal of 3384721 is 1274833.

3384721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1849600 + 1535121 = 1360^2 + 1239^2 .

It is a cyclic number.

It is not a de Polignac number, because 3384721 - 2³ = 3384713 is a prime.

It is a super-2 number, since 2×3384721² = 22912672495682, which contains 22 as substring.

3384721 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3384721.

It is not a weakly prime, because it can be changed into another prime (3384727) 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, 1692360 + 1692361.

It is an arithmetic number, because the mean of its divisors is an integer number (1692361).

Almost surely, 2^3384721 is an apocalyptic number.

It is an amenable number.

3384721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3384721 is an equidigital number, since it uses as much as digits as its factorization.

3384721 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 3384721 is about 1839.7611257987. The cubic root of 3384721 is about 150.1438767672.

The spelling of 3384721 in words is "three million, three hundred eighty-four thousand, seven hundred twenty-one".