478871487 has 16 divisors (see below), whose sum is σ = 751171680. Its totient is φ = 300468096.

The previous prime is 478871479. The next prime is 478871507. The reversal of 478871487 is 784178874.

478871487 is a `hidden beast` number, since 478 + 87 + 14 + 87 = 666.

It is not a de Polignac number, because 478871487 - 2³ = 478871479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478871467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 521188 + ... + 522105.

It is an arithmetic number, because the mean of its divisors is an integer number (46948230).

Almost surely, 2^478871487 is an apocalyptic number.

478871487 is a deficient number, since it is larger than the sum of its proper divisors (272300193).

478871487 is a wasteful number, since it uses less digits than its factorization.

478871487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043319 (or 1043313 counting only the distinct ones).

The product of its digits is 2809856, while the sum is 54.

The square root of 478871487 is about 21883.1324768645. The cubic root of 478871487 is about 782.3594385282.

The spelling of 478871487 in words is "four hundred seventy-eight million, eight hundred seventy-one thousand, four hundred eighty-seven".