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108838249 = 138372173
BaseRepresentation
bin1100111110010…
…11110101101001
321120210120000021
412133023311221
5210330310444
614444440441
72461052452
oct637136551
9246716007
10108838249
1156488873
1230549121
1319719640
1410652129
15984d584
hex67cbd69

108838249 has 4 divisors (see below), whose sum is σ = 117210436. Its totient is φ = 100466064.

The previous prime is 108838237. The next prime is 108838253. The reversal of 108838249 is 942838801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 942838801 = 2773333997.

It can be written as a sum of positive squares in 2 ways, for example, as 6969600 + 101868649 = 2640^2 + 10093^2 .

It is a cyclic number.

It is not a de Polignac number, because 108838249 - 29 = 108837737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108838949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4186074 + ... + 4186099.

It is an arithmetic number, because the mean of its divisors is an integer number (29302609).

Almost surely, 2108838249 is an apocalyptic number.

It is an amenable number.

108838249 is a deficient number, since it is larger than the sum of its proper divisors (8372187).

108838249 is an equidigital number, since it uses as much as digits as its factorization.

108838249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8372186.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 108838249 is about 10432.5571649524. The cubic root of 108838249 is about 477.4492132786.

The spelling of 108838249 in words is "one hundred eight million, eight hundred thirty-eight thousand, two hundred forty-nine".

Divisors: 1 13 8372173 108838249