478430391 has 8 divisors (see below), whose sum is σ = 638008560. Its totient is φ = 318902912.

The previous prime is 478430377. The next prime is 478430411. The reversal of 478430391 is 193034874.

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 478430391 - 2⁶ = 478430327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478430191) 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 7 ways as a sum of consecutive naturals, for example, 28045 + ... + 41753.

It is an arithmetic number, because the mean of its divisors is an integer number (79751070).

Almost surely, 2^478430391 is an apocalyptic number.

478430391 is a deficient number, since it is larger than the sum of its proper divisors (159578169).

478430391 is a wasteful number, since it uses less digits than its factorization.

478430391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25345.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 478430391 is about 21873.0517075236. The cubic root of 478430391 is about 782.1191502392.

The spelling of 478430391 in words is "four hundred seventy-eight million, four hundred thirty thousand, three hundred ninety-one".