478338257 has 8 divisors (see below), whose sum is σ = 495861696. Its totient is φ = 461056752.

The previous prime is 478338251. The next prime is 478338269. The reversal of 478338257 is 752833874.

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

It is a cyclic number.

It is not a de Polignac number, because 478338257 - 2⁴ = 478338241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478338251) 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, 56453 + ... + 64370.

It is an arithmetic number, because the mean of its divisors is an integer number (61982712).

Almost surely, 2^478338257 is an apocalyptic number.

It is an amenable number.

478338257 is a deficient number, since it is larger than the sum of its proper divisors (17523439).

478338257 is a wasteful number, since it uses less digits than its factorization.

478338257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120967.

The product of its digits is 1128960, while the sum is 47.

The square root of 478338257 is about 21870.9454985376. The cubic root of 478338257 is about 782.0689413386.

The spelling of 478338257 in words is "four hundred seventy-eight million, three hundred thirty-eight thousand, two hundred fifty-seven".