2789491 has 2 divisors, whose sum is σ = 2789492. Its totient is φ = 2789490.

The previous prime is 2789489. The next prime is 2789503. The reversal of 2789491 is 1949872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2789491 - 2¹ = 2789489 is a prime.

Together with 2789489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2789441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1394745 + 1394746.

It is an arithmetic number, because the mean of its divisors is an integer number (1394746).

2^2789491 is an apocalyptic number.

2789491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2789491 is an equidigital number, since it uses as much as digits as its factorization.

2789491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 40.

The square root of 2789491 is about 1670.1769367345. The cubic root of 2789491 is about 140.7694200925.

The spelling of 2789491 in words is "two million, seven hundred eighty-nine thousand, four hundred ninety-one".