13085839 has 6 divisors (see below), whose sum is σ = 14170056. Its totient is φ = 12079080.

The previous prime is 13085819. The next prime is 13085843. The reversal of 13085839 is 93858031.

It is not a de Polignac number, because 13085839 - 2¹⁹ = 12561551 is a prime.

It is a super-3 number, since 3×13085839³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13085798 and 13085807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13085819) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38547 + ... + 38884.

It is an arithmetic number, because the mean of its divisors is an integer number (2361676).

Almost surely, 2^13085839 is an apocalyptic number.

13085839 is a deficient number, since it is larger than the sum of its proper divisors (1084217).

13085839 is an equidigital number, since it uses as much as digits as its factorization.

13085839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77457 (or 77444 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 13085839 is about 3617.4354175299. The cubic root of 13085839 is about 235.6498626163.

It can be divided in two parts, 13085 and 839, that added together give a square (13924 = 118²).

The spelling of 13085839 in words is "thirteen million, eighty-five thousand, eight hundred thirty-nine".