478619791 has 8 divisors (see below), whose sum is σ = 515689664. Its totient is φ = 441586080.

The previous prime is 478619777. The next prime is 478619797. The reversal of 478619791 is 197916874.

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

It is not a de Polignac number, because 478619791 - 2⁵ = 478619759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478619797) 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, 22570 + ... + 38296.

It is an arithmetic number, because the mean of its divisors is an integer number (64461208).

Almost surely, 2^478619791 is an apocalyptic number.

478619791 is a deficient number, since it is larger than the sum of its proper divisors (37069873).

478619791 is a wasteful number, since it uses less digits than its factorization.

478619791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18081.

The product of its digits is 762048, while the sum is 52.

The square root of 478619791 is about 21877.3808075830. The cubic root of 478619791 is about 782.2223445085. Note that the first 3 decimals are identical.

The spelling of 478619791 in words is "four hundred seventy-eight million, six hundred nineteen thousand, seven hundred ninety-one".