444857 has 8 divisors (see below), whose sum is σ = 514176. Its totient is φ = 376992.

The previous prime is 444841. The next prime is 444859. The reversal of 444857 is 758444.

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

It is not a de Polignac number, because 444857 - 2⁴ = 444841 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 444857.

It is not an unprimeable number, because it can be changed into a prime (444859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413 + ... + 1029.

It is an arithmetic number, because the mean of its divisors is an integer number (64272).

2⁴⁴⁴⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

444857 is a deficient number, since it is larger than the sum of its proper divisors (69319).

444857 is a wasteful number, since it uses less digits than its factorization.

444857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727.

The product of its digits is 17920, while the sum is 32.

The square root of 444857 is about 666.9760115626. The cubic root of 444857 is about 76.3378884454.

Adding to 444857 its sum of digits (32), we get a square (444889 = 667²).

The spelling of 444857 in words is "four hundred forty-four thousand, eight hundred fifty-seven".