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8380111 is a prime number
BaseRepresentation
bin11111111101111011001111
3120202202100111
4133331323033
54121130421
6455340451
7131141545
oct37757317
916682314
108380111
114804113
122981727
13197545c
141181d95
15b07ee1
hex7fdecf

8380111 has 2 divisors, whose sum is σ = 8380112. Its totient is φ = 8380110.

The previous prime is 8380109. The next prime is 8380123. The reversal of 8380111 is 1110838.

8380111 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8380111 - 21 = 8380109 is a prime.

Together with 8380109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8380511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4190055 + 4190056.

It is an arithmetic number, because the mean of its divisors is an integer number (4190056).

Almost surely, 28380111 is an apocalyptic number.

8380111 is a deficient number, since it is larger than the sum of its proper divisors (1).

8380111 is an equidigital number, since it uses as much as digits as its factorization.

8380111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 8380111 is about 2894.8421373194. The cubic root of 8380111 is about 203.1187072133.

Adding to 8380111 its reverse (1110838), we get a palindrome (9490949).

The spelling of 8380111 in words is "eight million, three hundred eighty thousand, one hundred eleven".