2089989 has 32 divisors (see below), whose sum is σ = 3502080. Its totient is φ = 1220400.

The previous prime is 2089979. The next prime is 2090003. The reversal of 2089989 is 9899802.

It is not a de Polignac number, because 2089989 - 2¹¹ = 2087941 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2089939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9094 + ... + 9320.

It is an arithmetic number, because the mean of its divisors is an integer number (109440).

2^2089989 is an apocalyptic number.

It is an amenable number.

2089989 is a deficient number, since it is larger than the sum of its proper divisors (1412091).

2089989 is a wasteful number, since it uses less digits than its factorization.

2089989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 2089989 is about 1445.6794250455. The cubic root of 2089989 is about 127.8541021568.

It can be divided in two parts, 20 and 89989, that added together give a palindrome (90009).

The spelling of 2089989 in words is "two million, eighty-nine thousand, nine hundred eighty-nine".