3289861 has 2 divisors, whose sum is σ = 3289862. Its totient is φ = 3289860.

The previous prime is 3289849. The next prime is 3289877. The reversal of 3289861 is 1689823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2461761 + 828100 = 1569^2 + 910^2 .

It is a cyclic number.

It is not a de Polignac number, because 3289861 - 2¹¹ = 3287813 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3289861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3289361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1644930 + 1644931.

It is an arithmetic number, because the mean of its divisors is an integer number (1644931).

Almost surely, 2^3289861 is an apocalyptic number.

It is an amenable number.

3289861 is a deficient number, since it is larger than the sum of its proper divisors (1).

3289861 is an equidigital number, since it uses as much as digits as its factorization.

3289861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 37.

The square root of 3289861 is about 1813.7973977267. The cubic root of 3289861 is about 148.7279241302.

The spelling of 3289861 in words is "three million, two hundred eighty-nine thousand, eight hundred sixty-one".