2086549 has 2 divisors, whose sum is σ = 2086550. Its totient is φ = 2086548.

The previous prime is 2086547. The next prime is 2086571. The reversal of 2086549 is 9456802.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1932100 + 154449 = 1390^2 + 393^2 .

It is a cyclic number.

It is not a de Polignac number, because 2086549 - 2¹ = 2086547 is a prime.

Together with 2086547, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2086543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1043274 + 1043275.

It is an arithmetic number, because the mean of its divisors is an integer number (1043275).

2^2086549 is an apocalyptic number.

It is an amenable number.

2086549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2086549 is an equidigital number, since it uses as much as digits as its factorization.

2086549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 2086549 is about 1444.4891830678. The cubic root of 2086549 is about 127.7839168373.

The spelling of 2086549 in words is "two million, eighty-six thousand, five hundred forty-nine".