2221889 has 2 divisors, whose sum is σ = 2221890. Its totient is φ = 2221888.

The previous prime is 2221871. The next prime is 2221907. The reversal of 2221889 is 9881222.

It is a balanced prime because it is at equal distance from previous prime (2221871) and next prime (2221907).

It can be written as a sum of positive squares in only one way, i.e., 1420864 + 801025 = 1192^2 + 895^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221889 - 2⁸ = 2221633 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110944 + 1110945.

It is an arithmetic number, because the mean of its divisors is an integer number (1110945).

2^2221889 is an apocalyptic number.

It is an amenable number.

2221889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221889 is an equidigital number, since it uses as much as digits as its factorization.

2221889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 32.

The square root of 2221889 is about 1490.6002146786. The cubic root of 2221889 is about 130.4890651084.

The spelling of 2221889 in words is "two million, two hundred twenty-one thousand, eight hundred eighty-nine".