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8379109 = 43194863
BaseRepresentation
bin11111111101101011100101
3120202200222101
4133331223211
54121112414
6455332101
7131135614
oct37755345
916680871
108379109
114803392
122981031
131974b6b
14118187b
15b07a74
hex7fdae5

8379109 has 4 divisors (see below), whose sum is σ = 8574016. Its totient is φ = 8184204.

The previous prime is 8379073. The next prime is 8379127. The reversal of 8379109 is 9019738.

8379109 = T294 + T295 + ... + T422.

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 8379109 - 215 = 8346341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8379149) 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, 97389 + ... + 97474.

It is an arithmetic number, because the mean of its divisors is an integer number (2143504).

Almost surely, 28379109 is an apocalyptic number.

It is an amenable number.

8379109 is a deficient number, since it is larger than the sum of its proper divisors (194907).

8379109 is a wasteful number, since it uses less digits than its factorization.

8379109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194906.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 8379109 is about 2894.6690657137. The cubic root of 8379109 is about 203.1106113358.

The spelling of 8379109 in words is "eight million, three hundred seventy-nine thousand, one hundred nine".

Divisors: 1 43 194863 8379109