2789321 has 2 divisors, whose sum is σ = 2789322. Its totient is φ = 2789320.

The previous prime is 2789299. The next prime is 2789327. The reversal of 2789321 is 1239872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2131600 + 657721 = 1460^2 + 811^2 .

It is a cyclic number.

It is not a de Polignac number, because 2789321 - 2¹⁰ = 2788297 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2789327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1394660 + 1394661.

It is an arithmetic number, because the mean of its divisors is an integer number (1394661).

2^2789321 is an apocalyptic number.

It is an amenable number.

2789321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2789321 is an equidigital number, since it uses as much as digits as its factorization.

2789321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 2789321 is about 1670.1260431476. The cubic root of 2789321 is about 140.7665603967.

The spelling of 2789321 in words is "two million, seven hundred eighty-nine thousand, three hundred twenty-one".