444329989 has 4 divisors (see below), whose sum is σ = 446100480. Its totient is φ = 442559500.

The previous prime is 444329983. The next prime is 444330001. The reversal of 444329989 is 989923444.

It is a happy number.

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 444329989 - 2³ = 444329981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444329981) 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, 884869 + ... + 885370.

It is an arithmetic number, because the mean of its divisors is an integer number (111525120).

Almost surely, 2^444329989 is an apocalyptic number.

It is an amenable number.

444329989 is a deficient number, since it is larger than the sum of its proper divisors (1770491).

444329989 is a wasteful number, since it uses less digits than its factorization.

444329989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770490.

The product of its digits is 2239488, while the sum is 52.

The square root of 444329989 is about 21079.1363437879. The cubic root of 444329989 is about 763.0773133560.

The spelling of 444329989 in words is "four hundred forty-four million, three hundred twenty-nine thousand, nine hundred eighty-nine".