441898189 has 2 divisors, whose sum is σ = 441898190. Its totient is φ = 441898188.

The previous prime is 441898169. The next prime is 441898231. The reversal of 441898189 is 981898144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 429857289 + 12040900 = 20733^2 + 3470^2 .

It is a cyclic number.

It is not a de Polignac number, because 441898189 - 2¹¹ = 441896141 is a prime.

It is a super-4 number, since 4×441898189⁴ (a number of 36 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (441898109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220949094 + 220949095.

It is an arithmetic number, because the mean of its divisors is an integer number (220949095).

Almost surely, 2^441898189 is an apocalyptic number.

It is an amenable number.

441898189 is a deficient number, since it is larger than the sum of its proper divisors (1).

441898189 is an equidigital number, since it uses as much as digits as its factorization.

441898189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 663552, while the sum is 52.

The square root of 441898189 is about 21021.3745744659. The cubic root of 441898189 is about 761.6826689182.

The spelling of 441898189 in words is "four hundred forty-one million, eight hundred ninety-eight thousand, one hundred eighty-nine".