10988209 has 2 divisors, whose sum is σ = 10988210. Its totient is φ = 10988208.

The previous prime is 10988203. The next prime is 10988221. The reversal of 10988209 is 90288901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10909809 + 78400 = 3303^2 + 280^2 .

It is an emirp because it is prime and its reverse (90288901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10988209 - 2¹⁷ = 10857137 is a prime.

It is not a weakly prime, because it can be changed into another prime (10988203) 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, 5494104 + 5494105.

It is an arithmetic number, because the mean of its divisors is an integer number (5494105).

Almost surely, 2^10988209 is an apocalyptic number.

It is an amenable number.

10988209 is a deficient number, since it is larger than the sum of its proper divisors (1).

10988209 is an equidigital number, since it uses as much as digits as its factorization.

10988209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 10988209 is about 3314.8467536223. The cubic root of 10988209 is about 222.3185171649.

The spelling of 10988209 in words is "ten million, nine hundred eighty-eight thousand, two hundred nine".