3278369 has 2 divisors, whose sum is σ = 3278370. Its totient is φ = 3278368.

The previous prime is 3278347. The next prime is 3278371. The reversal of 3278369 is 9638723.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2849344 + 429025 = 1688^2 + 655^2 .

It is a cyclic number.

It is not a de Polignac number, because 3278369 - 2⁸ = 3278113 is a prime.

It is a super-2 number, since 2×3278369² = 21495406600322, which contains 22 as substring.

Together with 3278371, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3278329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1639184 + 1639185.

It is an arithmetic number, because the mean of its divisors is an integer number (1639185).

Almost surely, 2^3278369 is an apocalyptic number.

It is an amenable number.

3278369 is a deficient number, since it is larger than the sum of its proper divisors (1).

3278369 is an equidigital number, since it uses as much as digits as its factorization.

3278369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The square root of 3278369 is about 1810.6266870893. The cubic root of 3278369 is about 148.5545454452.

The spelling of 3278369 in words is "three million, two hundred seventy-eight thousand, three hundred sixty-nine".