2887939 has 2 divisors, whose sum is σ = 2887940. Its totient is φ = 2887938.

The previous prime is 2887933. The next prime is 2887979. The reversal of 2887939 is 9397882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2887939 - 2¹⁹ = 2363651 is a prime.

It is not a weakly prime, because it can be changed into another prime (2887933) 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, 1443969 + 1443970.

It is an arithmetic number, because the mean of its divisors is an integer number (1443970).

2^2887939 is an apocalyptic number.

2887939 is a deficient number, since it is larger than the sum of its proper divisors (1).

2887939 is an equidigital number, since it uses as much as digits as its factorization.

2887939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 46.

The square root of 2887939 is about 1699.3937154174. The cubic root of 2887939 is about 142.4063445338.

The spelling of 2887939 in words is "two million, eight hundred eighty-seven thousand, nine hundred thirty-nine".