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13379239 = 79716787
BaseRepresentation
bin110011000010…
…011010100111
3221011201212101
4303002122213
511411113424
61154432531
7221502346
oct63023247
927151771
1013379239
117609025
124592747
132a05a13
141ac3b5d
151294344
hexcc26a7

13379239 has 4 divisors (see below), whose sum is σ = 13396824. Its totient is φ = 13361656.

The previous prime is 13379227. The next prime is 13379257. The reversal of 13379239 is 93297331.

13379239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93297331 = 531760327.

It is a cyclic number.

It is not a de Polignac number, because 13379239 - 25 = 13379207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13379198 and 13379207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13379209) 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, 7597 + ... + 9190.

It is an arithmetic number, because the mean of its divisors is an integer number (3349206).

Almost surely, 213379239 is an apocalyptic number.

13379239 is a deficient number, since it is larger than the sum of its proper divisors (17585).

13379239 is an equidigital number, since it uses as much as digits as its factorization.

13379239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17584.

The product of its digits is 30618, while the sum is 37.

The square root of 13379239 is about 3657.7642078188. The cubic root of 13379239 is about 237.3980445115.

The spelling of 13379239 in words is "thirteen million, three hundred seventy-nine thousand, two hundred thirty-nine".

Divisors: 1 797 16787 13379239