478484247 has 4 divisors (see below), whose sum is σ = 637979000. Its totient is φ = 318989496.

The previous prime is 478484233. The next prime is 478484257. The reversal of 478484247 is 742484874.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 478484247 - 2¹⁴ = 478467863 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 478484196 and 478484205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478484207) 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, 79747372 + ... + 79747377.

It is an arithmetic number, because the mean of its divisors is an integer number (159494750).

Almost surely, 2^478484247 is an apocalyptic number.

478484247 is a deficient number, since it is larger than the sum of its proper divisors (159494753).

478484247 is a wasteful number, since it uses less digits than its factorization.

478484247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159494752.

The product of its digits is 1605632, while the sum is 48.

The square root of 478484247 is about 21874.2827768135. The cubic root of 478484247 is about 782.1484963603.

It can be divided in two parts, 478484 and 247, that added together give a triangular number (478731 = T₉₇₈).

The spelling of 478484247 in words is "four hundred seventy-eight million, four hundred eighty-four thousand, two hundred forty-seven".