3284639 has 2 divisors, whose sum is σ = 3284640. Its totient is φ = 3284638.

The previous prime is 3284599. The next prime is 3284647. The reversal of 3284639 is 9364823.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3284639 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 3³ + 2¹⁷ + 8⁷ + 4¹⁰ + 6⁵ + 3³ + 9 .

It is equal to p₂₃₅₈₈₉ and since 3284639 and 235889 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 3284599 and 3284608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3284669) 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 as a sum of consecutive naturals, namely, 1642319 + 1642320.

It is an arithmetic number, because the mean of its divisors is an integer number (1642320).

Almost surely, 2^3284639 is an apocalyptic number.

3284639 is a deficient number, since it is larger than the sum of its proper divisors (1).

3284639 is an equidigital number, since it uses as much as digits as its factorization.

3284639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 35.

The square root of 3284639 is about 1812.3573047277. The cubic root of 3284639 is about 148.6491904580.

The spelling of 3284639 in words is "three million, two hundred eighty-four thousand, six hundred thirty-nine".