444145447 has 8 divisors (see below), whose sum is σ = 457254000. Its totient is φ = 431095104.

The previous prime is 444145439. The next prime is 444145477. The reversal of 444145447 is 744541444.

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 444145447 - 2³ = 444145439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444145477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1179 + ... + 29827.

It is an arithmetic number, because the mean of its divisors is an integer number (57156750).

Almost surely, 2^444145447 is an apocalyptic number.

444145447 is a deficient number, since it is larger than the sum of its proper divisors (13108553).

444145447 is a wasteful number, since it uses less digits than its factorization.

444145447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29105.

The product of its digits is 143360, while the sum is 37.

The square root of 444145447 is about 21074.7585276795. The cubic root of 444145447 is about 762.9716566616.

The spelling of 444145447 in words is "four hundred forty-four million, one hundred forty-five thousand, four hundred forty-seven".