478909847 has 8 divisors (see below), whose sum is σ = 516593616. Its totient is φ = 441346752.

The previous prime is 478909843. The next prime is 478909853. The reversal of 478909847 is 748909874.

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 478909847 - 2² = 478909843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 478909792 and 478909801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478909843) 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, 21833 + ... + 37874.

It is an arithmetic number, because the mean of its divisors is an integer number (64574202).

Almost surely, 2^478909847 is an apocalyptic number.

478909847 is a deficient number, since it is larger than the sum of its proper divisors (37683769).

478909847 is a wasteful number, since it uses less digits than its factorization.

478909847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60337.

The product of its (nonzero) digits is 4064256, while the sum is 56.

The square root of 478909847 is about 21884.0089334656. The cubic root of 478909847 is about 782.3803282711.

The spelling of 478909847 in words is "four hundred seventy-eight million, nine hundred nine thousand, eight hundred forty-seven".