2686439 has 4 divisors (see below), whose sum is σ = 3070224. Its totient is φ = 2302656.

The previous prime is 2686393. The next prime is 2686451. The reversal of 2686439 is 9346862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2686439 - 2²⁰ = 1637863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2686039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191882 + ... + 191895.

It is an arithmetic number, because the mean of its divisors is an integer number (767556).

2^2686439 is an apocalyptic number.

2686439 is a deficient number, since it is larger than the sum of its proper divisors (383785).

2686439 is an equidigital number, since it uses as much as digits as its factorization.

2686439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383784.

The product of its digits is 62208, while the sum is 38.

The square root of 2686439 is about 1639.0359971642. The cubic root of 2686439 is about 139.0141455162.

It can be divided in two parts, 2686 and 439, that added together give a 5-th power (3125 = 5⁵).

The spelling of 2686439 in words is "two million, six hundred eighty-six thousand, four hundred thirty-nine".