489445217405 has 8 divisors (see below), whose sum is σ = 587823305784. Its totient is φ = 391230144000.

The previous prime is 489445217341. The next prime is 489445217453. The reversal of 489445217405 is 504712544984.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20448484 + 489424768921 = 4522^2 + 699589^2 .

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

It is not a de Polignac number, because 489445217405 - 2⁶ = 489445217341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40747136 + ... + 40759145.

It is an arithmetic number, because the mean of its divisors is an integer number (73477913223).

Almost surely, 2^489445217405 is an apocalyptic number.

It is an amenable number.

489445217405 is a deficient number, since it is larger than the sum of its proper divisors (98378088379).

489445217405 is a wasteful number, since it uses less digits than its factorization.

489445217405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81507487.

The product of its (nonzero) digits is 6451200, while the sum is 53.

The spelling of 489445217405 in words is "four hundred eighty-nine billion, four hundred forty-five million, two hundred seventeen thousand, four hundred five".