2189587 has 4 divisors (see below), whose sum is σ = 2265120. Its totient is φ = 2114056.

The previous prime is 2189573. The next prime is 2189599. The reversal of 2189587 is 7859812.

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

It is a cyclic number.

It is not a de Polignac number, because 2189587 - 2⁷ = 2189459 is a prime.

It is a Duffinian number.

2189587 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2189287) 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, 37723 + ... + 37780.

It is an arithmetic number, because the mean of its divisors is an integer number (566280).

2^2189587 is an apocalyptic number.

2189587 is a deficient number, since it is larger than the sum of its proper divisors (75533).

2189587 is an equidigital number, since it uses as much as digits as its factorization.

2189587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75532.

The product of its digits is 40320, while the sum is 40.

The square root of 2189587 is about 1479.7253123469. The cubic root of 2189587 is about 129.8536222252.

The spelling of 2189587 in words is "two million, one hundred eighty-nine thousand, five hundred eighty-seven".