444309889 has 8 divisors (see below), whose sum is σ = 468403040. Its totient is φ = 420287616.

The previous prime is 444309869. The next prime is 444309893. The reversal of 444309889 is 988903444.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 444309889 - 2⁵ = 444309857 is a prime.

It is a super-2 number, since 2×444309889² = 394822554926384642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444309869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4587 + ... + 30160.

It is an arithmetic number, because the mean of its divisors is an integer number (58550380).

Almost surely, 2^444309889 is an apocalyptic number.

It is an amenable number.

444309889 is a deficient number, since it is larger than the sum of its proper divisors (24093151).

444309889 is a wasteful number, since it uses less digits than its factorization.

444309889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35439.

The product of its (nonzero) digits is 995328, while the sum is 49.

The square root of 444309889 is about 21078.6595636440. The cubic root of 444309889 is about 763.0658068288.

The spelling of 444309889 in words is "four hundred forty-four million, three hundred nine thousand, eight hundred eighty-nine".