3278789 has 2 divisors, whose sum is σ = 3278790. Its totient is φ = 3278788.

The previous prime is 3278783. The next prime is 3278791. The reversal of 3278789 is 9878723.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3150625 + 128164 = 1775^2 + 358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3278789 is a prime.

Together with 3278791, 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 (3278783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1639394 + 1639395.

It is an arithmetic number, because the mean of its divisors is an integer number (1639395).

Almost surely, 2^3278789 is an apocalyptic number.

It is an amenable number.

3278789 is a deficient number, since it is larger than the sum of its proper divisors (1).

3278789 is an equidigital number, since it uses as much as digits as its factorization.

3278789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 44.

The square root of 3278789 is about 1810.7426653172. The cubic root of 3278789 is about 148.5608890717.

It can be divided in two parts, 327 and 8789, that multiplied together give a triangular number (2874003 = T₂₃₉₇).

The spelling of 3278789 in words is "three million, two hundred seventy-eight thousand, seven hundred eighty-nine".