2887993 has 2 divisors, whose sum is σ = 2887994. Its totient is φ = 2887992.

The previous prime is 2887987. The next prime is 2888021. The reversal of 2887993 is 3997882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2108304 + 779689 = 1452^2 + 883^2 .

It is a cyclic number.

It is not a de Polignac number, because 2887993 - 2⁹ = 2887481 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 polite number, since it can be written as a sum of consecutive naturals, namely, 1443996 + 1443997.

It is an arithmetic number, because the mean of its divisors is an integer number (1443997).

2^2887993 is an apocalyptic number.

It is an amenable number.

2887993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2887993 is an equidigital number, since it uses as much as digits as its factorization.

2887993 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 2887993 is about 1699.4096033623. The cubic root of 2887993 is about 142.4072321212.

It can be divided in two parts, 288 and 7993, that added together give a square (8281 = 91²).

The spelling of 2887993 in words is "two million, eight hundred eighty-seven thousand, nine hundred ninety-three".