8880220889 has 2 divisors, whose sum is σ = 8880220890. Its totient is φ = 8880220888.

The previous prime is 8880220807. The next prime is 8880220897. The reversal of 8880220889 is 9880220888.

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., 8576241664 + 303979225 = 92608^2 + 17435^2 .

It is a cyclic number.

It is not a de Polignac number, because 8880220889 - 2⁸ = 8880220633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8880220889.

It is not a weakly prime, because it can be changed into another prime (8880280889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4440110444 + 4440110445.

It is an arithmetic number, because the mean of its divisors is an integer number (4440110445).

Almost surely, 2^8880220889 is an apocalyptic number.

It is an amenable number.

8880220889 is a deficient number, since it is larger than the sum of its proper divisors (1).

8880220889 is an equidigital number, since it uses as much as digits as its factorization.

8880220889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1179648, while the sum is 53.

The square root of 8880220889 is about 94234.9239348130. The cubic root of 8880220889 is about 2070.8147810402.

Subtracting 8880220889 from its reverse (9880220888), we obtain a palindrome (999999999).

The spelling of 8880220889 in words is "eight billion, eight hundred eighty million, two hundred twenty thousand, eight hundred eighty-nine".