2789123 has 2 divisors, whose sum is σ = 2789124. Its totient is φ = 2789122.

The previous prime is 2789119. The next prime is 2789161. The reversal of 2789123 is 3219872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2789123 - 2² = 2789119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2789123.

It is not a weakly prime, because it can be changed into another prime (2780123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1394561 + 1394562.

It is an arithmetic number, because the mean of its divisors is an integer number (1394562).

2^2789123 is an apocalyptic number.

2789123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2789123 is an equidigital number, since it uses as much as digits as its factorization.

2789123 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 2789123 is about 1670.0667651325. The cubic root of 2789123 is about 140.7632295456.

The spelling of 2789123 in words is "two million, seven hundred eighty-nine thousand, one hundred twenty-three".