444400605 has 24 divisors (see below), whose sum is σ = 840322080. Its totient is φ = 215466720.

The previous prime is 444400603. The next prime is 444400679. The reversal of 444400605 is 506004444.

It is not a de Polignac number, because 444400605 - 2¹ = 444400603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444400603) 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 23 ways as a sum of consecutive naturals, for example, 448395 + ... + 449384.

It is an arithmetic number, because the mean of its divisors is an integer number (35013420).

Almost surely, 2^444400605 is an apocalyptic number.

444400605 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

444400605 is a deficient number, since it is larger than the sum of its proper divisors (395921475).

444400605 is a wasteful number, since it uses less digits than its factorization.

444400605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897801 (or 897798 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 444400605 is about 21080.8112984297. The cubic root of 444400605 is about 763.1177357256.

The spelling of 444400605 in words is "four hundred forty-four million, four hundred thousand, six hundred five".