478808347 has 4 divisors (see below), whose sum is σ = 479033920. Its totient is φ = 478582776.

The previous prime is 478808329. The next prime is 478808359. The reversal of 478808347 is 743808874.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 743808874 = 2 ⋅371904437.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478808347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 478808347.

It is not an unprimeable number, because it can be changed into a prime (478808327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109572 + ... + 113857.

It is an arithmetic number, because the mean of its divisors is an integer number (119758480).

Almost surely, 2^478808347 is an apocalyptic number.

478808347 is a deficient number, since it is larger than the sum of its proper divisors (225573).

478808347 is a wasteful number, since it uses less digits than its factorization.

478808347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225572.

The product of its (nonzero) digits is 1204224, while the sum is 49.

The square root of 478808347 is about 21881.6897656465. The cubic root of 478808347 is about 782.3250518869.

The spelling of 478808347 in words is "four hundred seventy-eight million, eight hundred eight thousand, three hundred forty-seven".