1088209 has 2 divisors, whose sum is σ = 1088210. Its totient is φ = 1088208.
The previous prime is 1088161. The next prime is 1088233. The reversal of 1088209 is 9028801.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 1000000 + 88209 = 1000^2 + 297^2 .
It is an emirp because it is prime and its reverse (9028801) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 1088209 - 27 = 1088081 is a prime.
It is not a weakly prime, because it can be changed into another prime (1088239) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544104 + 544105.
It is an arithmetic number, because the mean of its divisors is an integer number (544105).
21088209 is an apocalyptic number.
It is an amenable number.
1088209 is a deficient number, since it is larger than the sum of its proper divisors (1).
1088209 is an equidigital number, since it uses as much as digits as its factorization.
1088209 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1152, while the sum is 28.
The square root of 1088209 is about 1043.1725648233. The cubic root of 1088209 is about 102.8578489627.
The spelling of 1088209 in words is "one million, eighty-eight thousand, two hundred nine".
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