2189008447 has 2 divisors, whose sum is σ = 2189008448. Its totient is φ = 2189008446.

The previous prime is 2189008403. The next prime is 2189008457. The reversal of 2189008447 is 7448009812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2189008447 - 2¹¹ = 2189006399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2189008457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094504223 + 1094504224.

It is an arithmetic number, because the mean of its divisors is an integer number (1094504224).

Almost surely, 2^2189008447 is an apocalyptic number.

2189008447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2189008447 is an equidigital number, since it uses as much as digits as its factorization.

2189008447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 2189008447 is about 46786.8405323548. The cubic root of 2189008447 is about 1298.4218417465.

The spelling of 2189008447 in words is "two billion, one hundred eighty-nine million, eight thousand, four hundred forty-seven".