13825839 has 4 divisors (see below), whose sum is σ = 18434456. Its totient is φ = 9217224.

The previous prime is 13825831. The next prime is 13825853. The reversal of 13825839 is 93852831.

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

It is not a de Polignac number, because 13825839 - 2³ = 13825831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13825797 and 13825806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13825831) 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, 2304304 + ... + 2304309.

It is an arithmetic number, because the mean of its divisors is an integer number (4608614).

Almost surely, 2^13825839 is an apocalyptic number.

13825839 is a deficient number, since it is larger than the sum of its proper divisors (4608617).

13825839 is an equidigital number, since it uses as much as digits as its factorization.

13825839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4608616.

The product of its digits is 51840, while the sum is 39.

The square root of 13825839 is about 3718.3113102590. The cubic root of 13825839 is about 240.0106418892.

The spelling of 13825839 in words is "thirteen million, eight hundred twenty-five thousand, eight hundred thirty-nine".