478338313 has 4 divisors (see below), whose sum is σ = 478569600. Its totient is φ = 478107028.

The previous prime is 478338269. The next prime is 478338347. The reversal of 478338313 is 313833874.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 313833874 = 2 ⋅156916937.

It is a cyclic number.

It is not a de Polignac number, because 478338313 - 2²⁵ = 444783881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478338373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112513 + ... + 116686.

It is an arithmetic number, because the mean of its divisors is an integer number (119642400).

Almost surely, 2^478338313 is an apocalyptic number.

It is an amenable number.

478338313 is a deficient number, since it is larger than the sum of its proper divisors (231287).

478338313 is a wasteful number, since it uses less digits than its factorization.

478338313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231286.

The product of its digits is 145152, while the sum is 40.

The square root of 478338313 is about 21870.9467787748. The cubic root of 478338313 is about 782.0689718580.

The spelling of 478338313 in words is "four hundred seventy-eight million, three hundred thirty-eight thousand, three hundred thirteen".