2089643 has 2 divisors, whose sum is σ = 2089644. Its totient is φ = 2089642.

The previous prime is 2089627. The next prime is 2089651. The reversal of 2089643 is 3469802.

Added to its reverse (3469802) it gives a triangular number (5559445 = T₃₃₃₄).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2089643 - 2⁴ = 2089627 is a prime.

It is not a weakly prime, because it can be changed into another prime (2089613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1044821 + 1044822.

It is an arithmetic number, because the mean of its divisors is an integer number (1044822).

2^2089643 is an apocalyptic number.

2089643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2089643 is an equidigital number, since it uses as much as digits as its factorization.

2089643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 2089643 is about 1445.5597531752. The cubic root of 2089643 is about 127.8470463046.

Adding to 2089643 its reverse (3469802), we get a triangular number (5559445 = T₃₃₃₄).

The spelling of 2089643 in words is "two million, eighty-nine thousand, six hundred forty-three".