478684842 has 16 divisors (see below), whose sum is σ = 957584160. Its totient is φ = 159525872.

The previous prime is 478684831. The next prime is 478684847. The reversal of 478684842 is 248486874.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (478684847) 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, 47413 + ... + 56615.

It is an arithmetic number, because the mean of its divisors is an integer number (59849010).

Almost surely, 2^478684842 is an apocalyptic number.

478684842 is an abundant number, since it is smaller than the sum of its proper divisors (478899318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

478684842 is a wasteful number, since it uses less digits than its factorization.

478684842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17877.

The product of its digits is 2752512, while the sum is 51.

The square root of 478684842 is about 21878.8674752602. The cubic root of 478684842 is about 782.2577811547.

The spelling of 478684842 in words is "four hundred seventy-eight million, six hundred eighty-four thousand, eight hundred forty-two".