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109086079 = 234742873
BaseRepresentation
bin1101000000010…
…00010101111111
321121021010222011
412200020111333
5210411223304
614454032051
72463134134
oct640102577
9247233864
10109086079
1156637a93
1230648627
13197a539b
14106b858b
15989bc04
hex680857f

109086079 has 4 divisors (see below), whose sum is σ = 113828976. Its totient is φ = 104343184.

The previous prime is 109086073. The next prime is 109086083. The reversal of 109086079 is 970680901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 970680901 = 2543381707.

It is a cyclic number.

It is not a de Polignac number, because 109086079 - 23 = 109086071 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (109086071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2371414 + ... + 2371459.

It is an arithmetic number, because the mean of its divisors is an integer number (28457244).

Almost surely, 2109086079 is an apocalyptic number.

109086079 is a deficient number, since it is larger than the sum of its proper divisors (4742897).

109086079 is an equidigital number, since it uses as much as digits as its factorization.

109086079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4742896.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 109086079 is about 10444.4281317840. The cubic root of 109086079 is about 477.8113302779.

The spelling of 109086079 in words is "one hundred nine million, eighty-six thousand, seventy-nine".

Divisors: 1 23 4742873 109086079