444013189 has 2 divisors, whose sum is σ = 444013190. Its totient is φ = 444013188.

The previous prime is 444013187. The next prime is 444013237. The reversal of 444013189 is 981310444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 431268289 + 12744900 = 20767^2 + 3570^2 .

It is a cyclic number.

It is not a de Polignac number, because 444013189 - 2¹ = 444013187 is a prime.

Together with 444013187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444013187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222006594 + 222006595.

It is an arithmetic number, because the mean of its divisors is an integer number (222006595).

Almost surely, 2^444013189 is an apocalyptic number.

It is an amenable number.

444013189 is a deficient number, since it is larger than the sum of its proper divisors (1).

444013189 is an equidigital number, since it uses as much as digits as its factorization.

444013189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 444013189 is about 21071.6204645015. The cubic root of 444013189 is about 762.8959163653.

The spelling of 444013189 in words is "four hundred forty-four million, thirteen thousand, one hundred eighty-nine".