478469778 has 8 divisors (see below), whose sum is σ = 956939568. Its totient is φ = 159489924.

The previous prime is 478469773. The next prime is 478469791. The reversal of 478469778 is 877964874.

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

478469778 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (478469773) 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, 39872476 + ... + 39872487.

It is an arithmetic number, because the mean of its divisors is an integer number (119617446).

Almost surely, 2^478469778 is an apocalyptic number.

478469778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

478469778 is a wasteful number, since it uses less digits than its factorization.

478469778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79744968.

The product of its digits is 18966528, while the sum is 60.

The square root of 478469778 is about 21873.9520434694. The cubic root of 478469778 is about 782.1406124221.

The spelling of 478469778 in words is "four hundred seventy-eight million, four hundred sixty-nine thousand, seven hundred seventy-eight".