2087189 has 4 divisors (see below), whose sum is σ = 2247756. Its totient is φ = 1926624.

The previous prime is 2087179. The next prime is 2087203. The reversal of 2087189 is 9817802.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1020100 + 1067089 = 1010^2 + 1033^2 .

It is a cyclic number.

It is not a de Polignac number, because 2087189 - 2⁸ = 2086933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2087179) 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 3 ways as a sum of consecutive naturals, for example, 80264 + ... + 80289.

It is an arithmetic number, because the mean of its divisors is an integer number (561939).

2^2087189 is an apocalyptic number.

It is an amenable number.

2087189 is a deficient number, since it is larger than the sum of its proper divisors (160567).

2087189 is a wasteful number, since it uses less digits than its factorization.

2087189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160566.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 2087189 is about 1444.7106976831. The cubic root of 2087189 is about 127.7969804089.

The spelling of 2087189 in words is "two million, eighty-seven thousand, one hundred eighty-nine".