2089591 has 4 divisors (see below), whose sum is σ = 2388112. Its totient is φ = 1791072.

The previous prime is 2089583. The next prime is 2089613. The reversal of 2089591 is 1959802.

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 2089591 - 2³ = 2089583 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 (2089511) 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, 149250 + ... + 149263.

It is an arithmetic number, because the mean of its divisors is an integer number (597028).

2^2089591 is an apocalyptic number.

2089591 is a deficient number, since it is larger than the sum of its proper divisors (298521).

2089591 is an equidigital number, since it uses as much as digits as its factorization.

2089591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298520.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 2089591 is about 1445.5417669511. The cubic root of 2089591 is about 127.8459858202.

The spelling of 2089591 in words is "two million, eighty-nine thousand, five hundred ninety-one".