2086439 has 2 divisors, whose sum is σ = 2086440. Its totient is φ = 2086438.

The previous prime is 2086433. The next prime is 2086457. The reversal of 2086439 is 9346802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2086439 - 2⁴ = 2086423 is a prime.

It is a Chen prime.

It is equal to p₁₅₄₈₇₇ and since 2086439 and 154877 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2086433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1043219 + 1043220.

It is an arithmetic number, because the mean of its divisors is an integer number (1043220).

2^2086439 is an apocalyptic number.

2086439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2086439 is an equidigital number, since it uses as much as digits as its factorization.

2086439 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 2086439 is about 1444.4511068222. The cubic root of 2086439 is about 127.7816712669.

The spelling of 2086439 in words is "two million, eighty-six thousand, four hundred thirty-nine".