2887989 has 8 divisors (see below), whose sum is σ = 4146912. Its totient is φ = 1777200.

The previous prime is 2887987. The next prime is 2887993. The reversal of 2887989 is 9897882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2887989 - 2¹ = 2887987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2887987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36987 + ... + 37064.

It is an arithmetic number, because the mean of its divisors is an integer number (518364).

2^2887989 is an apocalyptic number.

It is an amenable number.

2887989 is a deficient number, since it is larger than the sum of its proper divisors (1258923).

2887989 is a wasteful number, since it uses less digits than its factorization.

2887989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74067.

The product of its digits is 580608, while the sum is 51.

The square root of 2887989 is about 1699.4084264826. The cubic root of 2887989 is about 142.4071663744.

The spelling of 2887989 in words is "two million, eight hundred eighty-seven thousand, nine hundred eighty-nine".