13779839 has 8 divisors (see below), whose sum is σ = 14082432. Its totient is φ = 13479840.

The previous prime is 13779833. The next prime is 13779851. The reversal of 13779839 is 93897731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13779839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13779793 and 13779802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13779833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13097 + ... + 14109.

It is an arithmetic number, because the mean of its divisors is an integer number (1760304).

Almost surely, 2^13779839 is an apocalyptic number.

13779839 is a deficient number, since it is larger than the sum of its proper divisors (302593).

13779839 is a wasteful number, since it uses less digits than its factorization.

13779839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297.

The product of its digits is 285768, while the sum is 47.

The square root of 13779839 is about 3712.1205529993. The cubic root of 13779839 is about 239.7441660417.

The spelling of 13779839 in words is "thirteen million, seven hundred seventy-nine thousand, eight hundred thirty-nine".