2276809 has 2 divisors, whose sum is σ = 2276810. Its totient is φ = 2276808.

The previous prime is 2276783. The next prime is 2276849. The reversal of 2276809 is 9086722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1814409 + 462400 = 1347^2 + 680^2 .

It is a cyclic number.

It is not a de Polignac number, because 2276809 - 2¹¹ = 2274761 is a prime.

It is not a weakly prime, because it can be changed into another prime (2276849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1138404 + 1138405.

It is an arithmetic number, because the mean of its divisors is an integer number (1138405).

2^2276809 is an apocalyptic number.

It is an amenable number.

2276809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2276809 is an equidigital number, since it uses as much as digits as its factorization.

2276809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 2276809 is about 1508.9098713972. The cubic root of 2276809 is about 131.5554566654. Note that the first 3 decimals are identical.

The spelling of 2276809 in words is "two million, two hundred seventy-six thousand, eight hundred nine".