487441309 has 4 divisors (see below), whose sum is σ = 504249660. Its totient is φ = 470632960.

The previous prime is 487441291. The next prime is 487441319. The reversal of 487441309 is 903144784.

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

It can be written as a sum of positive squares in 2 ways, for example, as 242424900 + 245016409 = 15570^2 + 15653^2 .

It is a cyclic number.

It is not a de Polignac number, because 487441309 - 2⁹ = 487440797 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487441319) 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, 8404132 + ... + 8404189.

It is an arithmetic number, because the mean of its divisors is an integer number (126062415).

Almost surely, 2^487441309 is an apocalyptic number.

It is an amenable number.

487441309 is a deficient number, since it is larger than the sum of its proper divisors (16808351).

487441309 is a wasteful number, since it uses less digits than its factorization.

487441309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16808350.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 487441309 is about 22078.0730363861. The cubic root of 487441309 is about 786.9988730450.

The spelling of 487441309 in words is "four hundred eighty-seven million, four hundred forty-one thousand, three hundred nine".