444491 has 4 divisors (see below), whose sum is σ = 454872. Its totient is φ = 434112.

The previous prime is 444487. The next prime is 444517. The reversal of 444491 is 194444.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 444491 - 2² = 444487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 444491.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 444491.

It is not an unprimeable number, because it can be changed into a prime (444401) 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, 5126 + ... + 5211.

It is an arithmetic number, because the mean of its divisors is an integer number (113718).

2⁴⁴⁴⁴⁹¹ is an apocalyptic number.

444491 is a deficient number, since it is larger than the sum of its proper divisors (10381).

444491 is a wasteful number, since it uses less digits than its factorization.

444491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10380.

The product of its digits is 2304, while the sum is 26.

The square root of 444491 is about 666.7015824190. The cubic root of 444491 is about 76.3169473842.

Subtracting from 444491 its reverse (194444), we obtain a cube (250047 = 63³).

It can be divided in two parts, 4444 and 91, that multiplied together give a palindrome (404404).

The spelling of 444491 in words is "four hundred forty-four thousand, four hundred ninety-one".