2089639 has 8 divisors (see below), whose sum is σ = 2222000. Its totient is φ = 1959552.

The previous prime is 2089627. The next prime is 2089643. The reversal of 2089639 is 9369802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2089639 - 2⁷ = 2089511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2089598 and 2089607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2089669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1567 + ... + 2575.

It is an arithmetic number, because the mean of its divisors is an integer number (277750).

2^2089639 is an apocalyptic number.

2089639 is a deficient number, since it is larger than the sum of its proper divisors (132361).

2089639 is a wasteful number, since it uses less digits than its factorization.

2089639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 2089639 is about 1445.5583696275. The cubic root of 2089639 is about 127.8469647295.

The spelling of 2089639 in words is "two million, eighty-nine thousand, six hundred thirty-nine".