487724909 has 4 divisors (see below), whose sum is σ = 557399904. Its totient is φ = 418049916.

The previous prime is 487724893. The next prime is 487724911. The reversal of 487724909 is 909427784.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 487724909 - 2⁴ = 487724893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487724999) 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, 34837487 + ... + 34837500.

It is an arithmetic number, because the mean of its divisors is an integer number (139349976).

Almost surely, 2^487724909 is an apocalyptic number.

It is an amenable number.

487724909 is a deficient number, since it is larger than the sum of its proper divisors (69674995).

487724909 is an equidigital number, since it uses as much as digits as its factorization.

487724909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69674994.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 487724909 is about 22084.4947644269. The cubic root of 487724909 is about 787.1514723458.

The spelling of 487724909 in words is "four hundred eighty-seven million, seven hundred twenty-four thousand, nine hundred nine".