4221258889 has 2 divisors, whose sum is σ = 4221258890. Its totient is φ = 4221258888.

The previous prime is 4221258887. The next prime is 4221258949. The reversal of 4221258889 is 9888521224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4130247289 + 91011600 = 64267^2 + 9540^2 .

It is a cyclic number.

It is not a de Polignac number, because 4221258889 - 2¹ = 4221258887 is a prime.

Together with 4221258887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4221258887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110629444 + 2110629445.

It is an arithmetic number, because the mean of its divisors is an integer number (2110629445).

Almost surely, 2^4221258889 is an apocalyptic number.

It is an amenable number.

4221258889 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221258889 is an equidigital number, since it uses as much as digits as its factorization.

4221258889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 737280, while the sum is 49.

The square root of 4221258889 is about 64971.2158497900. The cubic root of 4221258889 is about 1616.1462644188.

It can be divided in two parts, 42212 and 58889, that added together give a palindrome (101101).

The spelling of 4221258889 in words is "four billion, two hundred twenty-one million, two hundred fifty-eight thousand, eight hundred eighty-nine".