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13385929 = 47284807
BaseRepresentation
bin110011000100…
…000011001001
3221012002001011
4303010003021
511411322204
61154523521
7221531014
oct63040311
927162034
1013385929
117613057
1245965a1
132a08a8b
141ac637b
151296304
hexcc40c9

13385929 has 4 divisors (see below), whose sum is σ = 13670784. Its totient is φ = 13101076.

The previous prime is 13385923. The next prime is 13385941. The reversal of 13385929 is 92958331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13385929 - 23 = 13385921 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13385891 and 13385900.

It is not an unprimeable number, because it can be changed into a prime (13385921) 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, 142357 + ... + 142450.

It is an arithmetic number, because the mean of its divisors is an integer number (3417696).

Almost surely, 213385929 is an apocalyptic number.

It is an amenable number.

13385929 is a deficient number, since it is larger than the sum of its proper divisors (284855).

13385929 is an equidigital number, since it uses as much as digits as its factorization.

13385929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284854.

The product of its digits is 58320, while the sum is 40.

The square root of 13385929 is about 3658.6785865938. The cubic root of 13385929 is about 237.4376065094.

The spelling of 13385929 in words is "thirteen million, three hundred eighty-five thousand, nine hundred twenty-nine".

Divisors: 1 47 284807 13385929