224128889 has 2 divisors, whose sum is σ = 224128890. Its totient is φ = 224128888.

The previous prime is 224128871. The next prime is 224128909. The reversal of 224128889 is 988821422.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170955625 + 53173264 = 13075^2 + 7292^2 .

It is a cyclic number.

It is not a de Polignac number, because 224128889 - 2⁸ = 224128633 is a prime.

It is not a weakly prime, because it can be changed into another prime (224128819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112064444 + 112064445.

It is an arithmetic number, because the mean of its divisors is an integer number (112064445).

Almost surely, 2^224128889 is an apocalyptic number.

It is an amenable number.

224128889 is a deficient number, since it is larger than the sum of its proper divisors (1).

224128889 is an equidigital number, since it uses as much as digits as its factorization.

224128889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 147456, while the sum is 44.

The square root of 224128889 is about 14970.9348071522. The cubic root of 224128889 is about 607.4342550516.

The spelling of 224128889 in words is "two hundred twenty-four million, one hundred twenty-eight thousand, eight hundred eighty-nine".