444891 has 8 divisors (see below), whose sum is σ = 607824. Its totient is φ = 289280.

The previous prime is 444887. The next prime is 444893. The reversal of 444891 is 198444.

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 444891 - 2² = 444887 is a prime.

444891 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 444891.

It is not an unprimeable number, because it can be changed into a prime (444893) 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, 1686 + ... + 1931.

It is an arithmetic number, because the mean of its divisors is an integer number (75978).

2⁴⁴⁴⁸⁹¹ is an apocalyptic number.

444891 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

444891 is a deficient number, since it is larger than the sum of its proper divisors (162933).

444891 is a wasteful number, since it uses less digits than its factorization.

444891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661.

The product of its digits is 4608, while the sum is 30.

The square root of 444891 is about 667.0014992487. The cubic root of 444891 is about 76.3398332068.

The spelling of 444891 in words is "four hundred forty-four thousand, eight hundred ninety-one".