13816439 has 32 divisors (see below), whose sum is σ = 18332160. Its totient is φ = 10108800.

The previous prime is 13816433. The next prime is 13816463. The reversal of 13816439 is 93461831.

It is not a de Polignac number, because 13816439 - 2⁴ = 13816423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13816399 and 13816408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13816433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105404 + ... + 105534.

It is an arithmetic number, because the mean of its divisors is an integer number (572880).

Almost surely, 2^13816439 is an apocalyptic number.

13816439 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13816439 is a deficient number, since it is larger than the sum of its proper divisors (4515721).

13816439 is a wasteful number, since it uses less digits than its factorization.

13816439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231.

The product of its digits is 15552, while the sum is 35.

The square root of 13816439 is about 3717.0470806811. The cubic root of 13816439 is about 239.9562362332.

The spelling of 13816439 in words is "thirteen million, eight hundred sixteen thousand, four hundred thirty-nine".