988109 has 2 divisors, whose sum is σ = 988110. Its totient is φ = 988108.

The previous prime is 988093. The next prime is 988111. The reversal of 988109 is 901889.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 688900 + 299209 = 830^2 + 547^2 .

It is a cyclic number.

It is not a de Polignac number, because 988109 - 2⁴ = 988093 is a prime.

Together with 988111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (988129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494054 + 494055.

It is an arithmetic number, because the mean of its divisors is an integer number (494055).

2⁹⁸⁸¹⁰⁹ is an apocalyptic number.

It is an amenable number.

988109 is a deficient number, since it is larger than the sum of its proper divisors (1).

988109 is an equidigital number, since it uses as much as digits as its factorization.

988109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 988109 is about 994.0367196437. The cubic root of 988109 is about 99.6020518064.

The spelling of 988109 in words is "nine hundred eighty-eight thousand, one hundred nine".