478646883 has 96 divisors (see below), whose sum is σ = 871782912. Its totient is φ = 248601600.

The previous prime is 478646873. The next prime is 478646887. The reversal of 478646883 is 388646874.

It is a Cunningham number, because it is equal to 21878²-1.

It is not a de Polignac number, because 478646883 - 2⁴ = 478646867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (478646887) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2866066 + ... + 2866232.

It is an arithmetic number, because the mean of its divisors is an integer number (9081072).

Almost surely, 2^478646883 is an apocalyptic number.

478646883 is a deficient number, since it is larger than the sum of its proper divisors (393136029).

478646883 is a wasteful number, since it uses less digits than its factorization.

478646883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 342 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 54.

The square root of 478646883 is about 21877.9999771460. Note that the first 4 decimals coincide. The cubic root of 478646883 is about 782.2371033131.

Subtracting from 478646883 its reverse (388646874), we obtain a palindrome (90000009).

The spelling of 478646883 in words is "four hundred seventy-eight million, six hundred forty-six thousand, eight hundred eighty-three".