2087999 has 2 divisors, whose sum is σ = 2088000. Its totient is φ = 2087998.

The previous prime is 2087993. The next prime is 2088011. The reversal of 2087999 is 9997802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2087999 - 2⁴ = 2087983 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2087993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1043999 + 1044000.

It is an arithmetic number, because the mean of its divisors is an integer number (1044000).

2^2087999 is an apocalyptic number.

2087999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2087999 is an equidigital number, since it uses as much as digits as its factorization.

2087999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 2087999 is about 1444.9910034322. The cubic root of 2087999 is about 127.8135101635.

The spelling of 2087999 in words is "two million, eighty-seven thousand, nine hundred ninety-nine".