478967447 has 16 divisors (see below), whose sum is σ = 578434560. Its totient is φ = 387428832.

The previous prime is 478967443. The next prime is 478967471. The reversal of 478967447 is 744769874.

It is a happy number.

It is not a de Polignac number, because 478967447 - 2² = 478967443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 478967392 and 478967401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478967443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28133 + ... + 41825.

It is an arithmetic number, because the mean of its divisors is an integer number (36152160).

Almost surely, 2^478967447 is an apocalyptic number.

478967447 is a deficient number, since it is larger than the sum of its proper divisors (99467113).

478967447 is a wasteful number, since it uses less digits than its factorization.

478967447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13982.

The product of its digits is 9483264, while the sum is 56.

The square root of 478967447 is about 21885.3249233362. The cubic root of 478967447 is about 782.4116934648.

The spelling of 478967447 in words is "four hundred seventy-eight million, nine hundred sixty-seven thousand, four hundred forty-seven".