444344491 has 4 divisors (see below), whose sum is σ = 445452984. Its totient is φ = 443236000.

The previous prime is 444344477. The next prime is 444344539. The reversal of 444344491 is 194443444.

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 444344491 - 2⁹ = 444343979 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 444344491.

It is not an unprimeable number, because it can be changed into a prime (444344441) 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, 553645 + ... + 554446.

It is an arithmetic number, because the mean of its divisors is an integer number (111363246).

Almost surely, 2^444344491 is an apocalyptic number.

444344491 is a deficient number, since it is larger than the sum of its proper divisors (1108493).

444344491 is a wasteful number, since it uses less digits than its factorization.

444344491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108492.

The product of its digits is 110592, while the sum is 37.

The square root of 444344491 is about 21079.4803304066. The cubic root of 444344491 is about 763.0856150139.

It can be divided in two parts, 4443444 and 91, that multiplied together give a palindrome (404353404).

The spelling of 444344491 in words is "four hundred forty-four million, three hundred forty-four thousand, four hundred ninety-one".