2866289 has 2 divisors, whose sum is σ = 2866290. Its totient is φ = 2866288.

The previous prime is 2866277. The next prime is 2866309. The reversal of 2866289 is 9826682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2608225 + 258064 = 1615^2 + 508^2 .

It is a cyclic number.

It is not a de Polignac number, because 2866289 - 2⁸ = 2866033 is a prime.

It is a super-2 number, since 2×2866289² = 16431225263042, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2866189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1433144 + 1433145.

It is an arithmetic number, because the mean of its divisors is an integer number (1433145).

2^2866289 is an apocalyptic number.

It is an amenable number.

2866289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2866289 is an equidigital number, since it uses as much as digits as its factorization.

2866289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 41.

The square root of 2866289 is about 1693.0118133079. The cubic root of 2866289 is about 142.0495925439.

The spelling of 2866289 in words is "two million, eight hundred sixty-six thousand, two hundred eighty-nine".