487917857 has 16 divisors (see below), whose sum is σ = 575393280. Its totient is φ = 405070848.

The previous prime is 487917851. The next prime is 487917869. The reversal of 487917857 is 758719784.

It is not a de Polignac number, because 487917857 - 2¹⁰ = 487916833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (487917851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24269 + ... + 39557.

It is an arithmetic number, because the mean of its divisors is an integer number (35962080).

Almost surely, 2^487917857 is an apocalyptic number.

487917857 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

487917857 is a deficient number, since it is larger than the sum of its proper divisors (87475423).

487917857 is a wasteful number, since it uses less digits than its factorization.

487917857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15440.

The product of its digits is 3951360, while the sum is 56.

The square root of 487917857 is about 22088.8627366825. The cubic root of 487917857 is about 787.2552598673.

The spelling of 487917857 in words is "four hundred eighty-seven million, nine hundred seventeen thousand, eight hundred fifty-seven".