487947 has 4 divisors (see below), whose sum is σ = 650600. Its totient is φ = 325296.

The previous prime is 487943. The next prime is 487973. The reversal of 487947 is 749784.

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

It is not a de Polignac number, because 487947 - 2² = 487943 is a prime.

It is a D-number.

It is a Duffinian number.

487947 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (487943) 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, 81322 + ... + 81327.

It is an arithmetic number, because the mean of its divisors is an integer number (162650).

2⁴⁸⁷⁹⁴⁷ is an apocalyptic number.

487947 is a deficient number, since it is larger than the sum of its proper divisors (162653).

487947 is a wasteful number, since it uses less digits than its factorization.

487947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162652.

The product of its digits is 56448, while the sum is 39.

The square root of 487947 is about 698.5320321932. The cubic root of 487947 is about 78.7270933628.

The spelling of 487947 in words is "four hundred eighty-seven thousand, nine hundred forty-seven".