2859987 has 12 divisors (see below), whose sum is σ = 4129944. Its totient is φ = 1759680.

The previous prime is 2859979. The next prime is 2859991. The reversal of 2859987 is 7899582.

It is a happy number.

It is not a de Polignac number, because 2859987 - 2³ = 2859979 is a prime.

Its product of digits (362880) is a multiple of the sum of its prime factors (5670).

It is not an unprimeable number, because it can be changed into a prime (2859977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2314 + ... + 3327.

It is an arithmetic number, because the mean of its divisors is an integer number (344162).

2^2859987 is an apocalyptic number.

2859987 is a deficient number, since it is larger than the sum of its proper divisors (1269957).

2859987 is a wasteful number, since it uses less digits than its factorization.

2859987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5670 (or 5657 counting only the distinct ones).

The product of its digits is 362880, while the sum is 48.

The square root of 2859987 is about 1691.1496089938. The cubic root of 2859987 is about 141.9454098169.

The spelling of 2859987 in words is "two million, eight hundred fifty-nine thousand, nine hundred eighty-seven".