2819797 has 2 divisors, whose sum is σ = 2819798. Its totient is φ = 2819796.

The previous prime is 2819783. The next prime is 2819801. The reversal of 2819797 is 7979182.

It is a happy number.

2819797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2792241 + 27556 = 1671^2 + 166^2 .

It is a cyclic number.

It is not a de Polignac number, because 2819797 - 2¹⁹ = 2295509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2819717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1409898 + 1409899.

It is an arithmetic number, because the mean of its divisors is an integer number (1409899).

2^2819797 is an apocalyptic number.

It is an amenable number.

2819797 is a deficient number, since it is larger than the sum of its proper divisors (1).

2819797 is an equidigital number, since it uses as much as digits as its factorization.

2819797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 43.

The square root of 2819797 is about 1679.2251189165. The cubic root of 2819797 is about 141.2773742857.

The spelling of 2819797 in words is "two million, eight hundred nineteen thousand, seven hundred ninety-seven".