2089801 has 6 divisors (see below), whose sum is σ = 2431050. Its totient is φ = 1791216.

The previous prime is 2089781. The next prime is 2089807. The reversal of 2089801 is 1089802.

It can be written as a sum of positive squares in only one way, i.e., 1863225 + 226576 = 1365^2 + 476^2 .

It is not a de Polignac number, because 2089801 - 2⁷ = 2089673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2089801.

It is not an unprimeable number, because it can be changed into a prime (2089807) 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 5 ways as a sum of consecutive naturals, for example, 21276 + ... + 21373.

It is an arithmetic number, because the mean of its divisors is an integer number (405175).

2^2089801 is an apocalyptic number.

It is an amenable number.

2089801 is a deficient number, since it is larger than the sum of its proper divisors (341249).

2089801 is an equidigital number, since it uses as much as digits as its factorization.

2089801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42663 (or 42656 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 2089801 is about 1445.6144022526. The cubic root of 2089801 is about 127.8502684378.

Subtracting from 2089801 its reverse (1089802), we obtain a palindrome (999999).

It can be divided in two parts, 208980 and 1, that added together give a triangular number (208981 = T₆₄₆).

The spelling of 2089801 in words is "two million, eighty-nine thousand, eight hundred one".