441920189 has 2 divisors, whose sum is σ = 441920190. Its totient is φ = 441920188.

The previous prime is 441920123. The next prime is 441920191. The reversal of 441920189 is 981029144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 348120964 + 93799225 = 18658^2 + 9685^2 .

It is a cyclic number.

It is not a de Polignac number, because 441920189 - 2¹² = 441916093 is a prime.

Together with 441920191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (441920789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220960094 + 220960095.

It is an arithmetic number, because the mean of its divisors is an integer number (220960095).

Almost surely, 2^441920189 is an apocalyptic number.

It is an amenable number.

441920189 is a deficient number, since it is larger than the sum of its proper divisors (1).

441920189 is an equidigital number, since it uses as much as digits as its factorization.

441920189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 441920189 is about 21021.8978448664. The cubic root of 441920189 is about 761.6953088890.

The spelling of 441920189 in words is "four hundred forty-one million, nine hundred twenty thousand, one hundred eighty-nine".