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988111 is a prime number
BaseRepresentation
bin11110001001111001111
31212012102201
43301033033
5223104421
633102331
711253535
oct3611717
91765381
10988111
11615423
123b79a7
132879a7
141ba155
15147b91
hexf13cf

988111 has 2 divisors, whose sum is σ = 988112. Its totient is φ = 988110.

The previous prime is 988109. The next prime is 988129. The reversal of 988111 is 111889.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 988111 - 21 = 988109 is a prime.

Together with 988109, it forms a pair of twin primes.

It is equal to p77644 and since 988111 and 77644 have the same sum of digits, it is a Honaker prime.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 988111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (988511) 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 as a sum of consecutive naturals, namely, 494055 + 494056.

It is an arithmetic number, because the mean of its divisors is an integer number (494056).

2988111 is an apocalyptic number.

988111 is a deficient number, since it is larger than the sum of its proper divisors (1).

988111 is an equidigital number, since it uses as much as digits as its factorization.

988111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 28.

The square root of 988111 is about 994.0377256422. The cubic root of 988111 is about 99.6021190068.

The spelling of 988111 in words is "nine hundred eighty-eight thousand, one hundred eleven".