13938829 has 4 divisors (see below), whose sum is σ = 13983676. Its totient is φ = 13893984.

The previous prime is 13938823. The next prime is 13938857. The reversal of 13938829 is 92883931.

It is a happy number.

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 2883204 + 11055625 = 1698^2 + 3325^2 .

It is a cyclic number.

It is not a de Polignac number, because 13938829 - 2⁵ = 13938797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13938823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21954 + ... + 22579.

It is an arithmetic number, because the mean of its divisors is an integer number (3495919).

Almost surely, 2^13938829 is an apocalyptic number.

It is an amenable number.

13938829 is a deficient number, since it is larger than the sum of its proper divisors (44847).

13938829 is an equidigital number, since it uses as much as digits as its factorization.

13938829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44846.

The product of its digits is 93312, while the sum is 43.

The square root of 13938829 is about 3733.4741193693. The cubic root of 13938829 is about 240.6626881767.

The spelling of 13938829 in words is "thirteen million, nine hundred thirty-eight thousand, eight hundred twenty-nine".