13859005 has 4 divisors (see below), whose sum is σ = 16630812. Its totient is φ = 11087200.

The previous prime is 13858997. The next prime is 13859039. The reversal of 13859005 is 50095831.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3606201 + 10252804 = 1899^2 + 3202^2 .

It is not a de Polignac number, because 13859005 - 2³ = 13858997 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1385896 + ... + 1385905.

It is an arithmetic number, because the mean of its divisors is an integer number (4157703).

Almost surely, 2^13859005 is an apocalyptic number.

It is an amenable number.

13859005 is a deficient number, since it is larger than the sum of its proper divisors (2771807).

13859005 is an equidigital number, since it uses as much as digits as its factorization.

13859005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771806.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 13859005 is about 3722.7684590906. The cubic root of 13859005 is about 240.2024044853.

The spelling of 13859005 in words is "thirteen million, eight hundred fifty-nine thousand, five".