13872839 has 4 divisors (see below), whose sum is σ = 13904880. Its totient is φ = 13840800.

The previous prime is 13872829. The next prime is 13872851. The reversal of 13872839 is 93827831.

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 13872839 - 2²⁰ = 12824263 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13872796 and 13872805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13872809) 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, 15362 + ... + 16239.

It is an arithmetic number, because the mean of its divisors is an integer number (3476220).

Almost surely, 2^13872839 is an apocalyptic number.

13872839 is a deficient number, since it is larger than the sum of its proper divisors (32041).

13872839 is an equidigital number, since it uses as much as digits as its factorization.

13872839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32040.

The product of its digits is 72576, while the sum is 41.

The square root of 13872839 is about 3724.6260214953. The cubic root of 13872839 is about 240.2823009141.

The spelling of 13872839 in words is "thirteen million, eight hundred seventy-two thousand, eight hundred thirty-nine".