478084857 has 8 divisors (see below), whose sum is σ = 649473984. Its totient is φ = 312709488.

The previous prime is 478084843. The next prime is 478084861. The reversal of 478084857 is 758480874.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 478084857 - 2¹² = 478080761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (478084357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1503253 + ... + 1503570.

It is an arithmetic number, because the mean of its divisors is an integer number (81184248).

Almost surely, 2^478084857 is an apocalyptic number.

It is an amenable number.

478084857 is a deficient number, since it is larger than the sum of its proper divisors (171389127).

478084857 is a wasteful number, since it uses less digits than its factorization.

478084857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3006879.

The product of its (nonzero) digits is 2007040, while the sum is 51.

The square root of 478084857 is about 21865.1516573748. The cubic root of 478084857 is about 781.9308164365.

The spelling of 478084857 in words is "four hundred seventy-eight million, eighty-four thousand, eight hundred fifty-seven".