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13199693 = 131015361
BaseRepresentation
bin110010010110…
…100101001101
3220211121120112
4302112211031
511334342233
61150525405
7220124033
oct62264515
926747515
1013199693
1174a6141
124506865
132972090
141a78553
15125b048
hexc9694d

13199693 has 4 divisors (see below), whose sum is σ = 14215068. Its totient is φ = 12184320.

The previous prime is 13199689. The next prime is 13199741. The reversal of 13199693 is 39699131.

13199693 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: 39699131 = 172335243.

It can be written as a sum of positive squares in 2 ways, for example, as 1075369 + 12124324 = 1037^2 + 3482^2 .

It is a cyclic number.

It is not a de Polignac number, because 13199693 - 22 = 13199689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13199693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13199653) 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, 507668 + ... + 507693.

It is an arithmetic number, because the mean of its divisors is an integer number (3553767).

Almost surely, 213199693 is an apocalyptic number.

13199693 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13199693 is a deficient number, since it is larger than the sum of its proper divisors (1015375).

13199693 is a wasteful number, since it uses less digits than its factorization.

13199693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015374.

The product of its digits is 39366, while the sum is 41.

The square root of 13199693 is about 3633.1381751868. The cubic root of 13199693 is about 236.3313179006.

The spelling of 13199693 in words is "thirteen million, one hundred ninety-nine thousand, six hundred ninety-three".

Divisors: 1 13 1015361 13199693