4442189 has 2 divisors, whose sum is σ = 4442190.
Its totient is φ = 4442188.
The previous prime is 4442171. The next prime is 4442209. The reversal of 4442189 is 9812444.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 3452164 + 990025 = 1858^2 + 995^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-4442189 is a prime.
It is a super-2 number, since 2×44421892 = 39466086223442, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (4442159) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2221094 + 2221095.
It is an arithmetic number, because the mean of its divisors is an integer number (2221095).
Almost surely, 24442189 is an apocalyptic number.
It is an amenable number.
4442189 is a deficient number, since it is larger than the sum of its proper divisors (1).
4442189 is an equidigital number, since it uses as much as digits as its factorization.
4442189 is an evil number, because the sum of its binary digits is even.
The product of its digits is 9216, while the sum is 32.
The square root of 4442189 is about 2107.6501132778.
The cubic root of 4442189 is about 164.3863215611.
The spelling of 4442189 in words is "four million, four hundred forty-two thousand, one hundred eighty-nine".