2277389 has 2 divisors, whose sum is σ = 2277390. Its totient is φ = 2277388.

The previous prime is 2277383. The next prime is 2277403. The reversal of 2277389 is 9837722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2079364 + 198025 = 1442^2 + 445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2277389 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2277383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1138694 + 1138695.

It is an arithmetic number, because the mean of its divisors is an integer number (1138695).

2^2277389 is an apocalyptic number.

It is an amenable number.

2277389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2277389 is an equidigital number, since it uses as much as digits as its factorization.

2277389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 38.

The square root of 2277389 is about 1509.1020508899. The cubic root of 2277389 is about 131.5666266386.

The spelling of 2277389 in words is "two million, two hundred seventy-seven thousand, three hundred eighty-nine".