444894189 has 4 divisors (see below), whose sum is σ = 593192256. Its totient is φ = 296596124.

The previous prime is 444894187. The next prime is 444894217. The reversal of 444894189 is 981498444.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 444894189 - 2¹ = 444894187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444894187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74149029 + ... + 74149034.

It is an arithmetic number, because the mean of its divisors is an integer number (148298064).

Almost surely, 2^444894189 is an apocalyptic number.

It is an amenable number.

444894189 is a deficient number, since it is larger than the sum of its proper divisors (148298067).

444894189 is a wasteful number, since it uses less digits than its factorization.

444894189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148298066.

The product of its digits is 1327104, while the sum is 51.

The square root of 444894189 is about 21092.5149994020. The cubic root of 444894189 is about 763.4001560887.

The spelling of 444894189 in words is "four hundred forty-four million, eight hundred ninety-four thousand, one hundred eighty-nine".