2089771 has 4 divisors (see below), whose sum is σ = 2118472. Its totient is φ = 2061072.

The previous prime is 2089751. The next prime is 2089781. The reversal of 2089771 is 1779802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1779802 = 2 ⋅889901.

It is a cyclic number.

It is not a de Polignac number, because 2089771 - 2⁷ = 2089643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2089751) 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, 14241 + ... + 14386.

It is an arithmetic number, because the mean of its divisors is an integer number (529618).

2^2089771 is an apocalyptic number.

2089771 is a deficient number, since it is larger than the sum of its proper divisors (28701).

2089771 is an equidigital number, since it uses as much as digits as its factorization.

2089771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28700.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 2089771 is about 1445.6040260044. The cubic root of 2089771 is about 127.8496566528.

The spelling of 2089771 in words is "two million, eighty-nine thousand, seven hundred seventy-one".