209003089 has 2 divisors, whose sum is σ = 209003090. Its totient is φ = 209003088.

The previous prime is 209003077. The next prime is 209003101. The reversal of 209003089 is 980300902.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (209003077) and next prime (209003101).

It can be written as a sum of positive squares in only one way, i.e., 116208400 + 92794689 = 10780^2 + 9633^2 .

It is a cyclic number.

It is not a de Polignac number, because 209003089 - 2¹¹ = 209001041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 209003089.

It is not a weakly prime, because it can be changed into another prime (209003189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104501544 + 104501545.

It is an arithmetic number, because the mean of its divisors is an integer number (104501545).

Almost surely, 2^209003089 is an apocalyptic number.

It is an amenable number.

209003089 is a deficient number, since it is larger than the sum of its proper divisors (1).

209003089 is an equidigital number, since it uses as much as digits as its factorization.

209003089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 209003089 is about 14456.9391297052. The cubic root of 209003089 is about 593.4501377233.

The spelling of 209003089 in words is "two hundred nine million, three thousand, eighty-nine".