2487889 has 4 divisors (see below), whose sum is σ = 2491060. Its totient is φ = 2484720.

The previous prime is 2487883. The next prime is 2487907. The reversal of 2487889 is 9887842.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9887842 = 2 ⋅4943921.

It can be written as a sum of positive squares in 2 ways, for example, as 54289 + 2433600 = 233^2 + 1560^2 .

It is a cyclic number.

It is not a de Polignac number, because 2487889 - 2²¹ = 390737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2487883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559 + ... + 2299.

It is an arithmetic number, because the mean of its divisors is an integer number (622765).

2^2487889 is an apocalyptic number.

It is an amenable number.

2487889 is a deficient number, since it is larger than the sum of its proper divisors (3171).

2487889 is a wasteful number, since it uses less digits than its factorization.

2487889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3170.

The product of its digits is 258048, while the sum is 46.

The square root of 2487889 is about 1577.3043460284. The cubic root of 2487889 is about 135.5013638929.

The spelling of 2487889 in words is "two million, four hundred eighty-seven thousand, eight hundred eighty-nine".