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987911 is a prime number
BaseRepresentation
bin11110001001100000111
31212012011022
43301030013
5223103121
633101355
711253131
oct3611407
91765138
10987911
11615261
123b785b
13287882
141ba051
15147aab
hexf1307

987911 has 2 divisors, whose sum is σ = 987912. Its totient is φ = 987910.

The previous prime is 987869. The next prime is 987913. The reversal of 987911 is 119789.

987911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-987911 is a prime.

It is a Sophie Germain prime.

Together with 987913, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (987913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493955 + 493956.

It is an arithmetic number, because the mean of its divisors is an integer number (493956).

2987911 is an apocalyptic number.

987911 is a deficient number, since it is larger than the sum of its proper divisors (1).

987911 is an equidigital number, since it uses as much as digits as its factorization.

987911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 35.

The square root of 987911 is about 993.9371207476. The cubic root of 987911 is about 99.5953985175.

The spelling of 987911 in words is "nine hundred eighty-seven thousand, nine hundred eleven".