2809087 has 2 divisors, whose sum is σ = 2809088. Its totient is φ = 2809086.

The previous prime is 2809073. The next prime is 2809091. The reversal of 2809087 is 7809082.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2809087 - 2⁷ = 2808959 is a prime.

2809087 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2809007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1404543 + 1404544.

It is an arithmetic number, because the mean of its divisors is an integer number (1404544).

2^2809087 is an apocalyptic number.

2809087 is a deficient number, since it is larger than the sum of its proper divisors (1).

2809087 is an equidigital number, since it uses as much as digits as its factorization.

2809087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 2809087 is about 1676.0331142313. The cubic root of 2809087 is about 141.0982833364.

The spelling of 2809087 in words is "two million, eight hundred nine thousand, eighty-seven".