478858393 has 8 divisors (see below), whose sum is σ = 528272136. Its totient is φ = 431241600.

The previous prime is 478858279. The next prime is 478858417. The reversal of 478858393 is 393858874.

It can be written as a sum of positive squares in 4 ways, for example, as 58936329 + 419922064 = 7677^2 + 20492^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478858393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478855393) 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, 448678 + ... + 449743.

It is an arithmetic number, because the mean of its divisors is an integer number (66034017).

Almost surely, 2^478858393 is an apocalyptic number.

It is an amenable number.

478858393 is a deficient number, since it is larger than the sum of its proper divisors (49413743).

478858393 is a wasteful number, since it uses less digits than its factorization.

478858393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898475.

The product of its digits is 5806080, while the sum is 55.

The square root of 478858393 is about 21882.8332946170. The cubic root of 478858393 is about 782.3523076604.

The spelling of 478858393 in words is "four hundred seventy-eight million, eight hundred fifty-eight thousand, three hundred ninety-three".